Margins, Pagination, and Headings

Use these general guidelines to format the paper:

1. Set the top, bottom, and side margins of your paper at 1 inch.
2. Use double-spaced text throughout your paper.
3. Use a standard font, such as Times New Roman or Arial, in a legible size (10- to 12-point).
4. Use continuous pagination throughout the paper, including the title page and the references section. Page numbers appear flush right within your header.
5. Section headings and subsection headings within the body of your paper use different types of formatting depending on the level of information you are presenting. Additional details from Jorge’s paper are provided.

Headings

APA style uses section headings to organize information, making it easy for the reader to follow the writer’s train of thought and to know immediately what major topics are covered. Depending on the length and complexity of the paper, its major sections may also be divided into subsections, sub-subsections, and so on. These smaller sections, in turn, use different heading styles to indicate different levels of information. In essence, you are using headings to create a hierarchy of information.

The following heading styles used in APA formatting are listed in order of greatest to least importance:

1. Section headings use centered, boldface type. Headings use title case, with important words in the heading capitalized.
2. Subsection headings use left-aligned, boldface type. Headings use title case.
3. The third level uses left-aligned, indented, boldface type. Headings use a capital letter only for the first word, and they end in a period.
4. The fourth level follows the same style used for the previous level, but the headings are boldfaced and italicized.
5. The fifth level follows the same style used for the previous level, but the headings are italicized and not boldfaced.

Visually, the hierarchy of information is organized as indicated in the table below.

A college research paper may not use all the heading levels shown here, but you are likely to encounter them in academic journal articles that use APA style. For a brief paper, you may find that level 1 headings suffice. Longer or more complex papers may need level 2 headings or other lower-level headings to organize information clearly. Use your outline to craft your major section headings and determine whether any subtopics are substantial enough to require additional levels of headings.

Tip

In APA style, book and article titles are formatted in sentence case, not title case. Sentence case means that only the first word is capitalized, along with any proper nouns.

Key Takeaways

• Following proper citation and formatting guidelines helps writers ensure that their work will be taken seriously, give proper credit to other authors for their work, and provide valuable information to readers.
• Working ahead and taking care to cite sources correctly the first time are ways writers can save time during the editing stage of writing a research paper.
• APA papers usually include an abstract that concisely summarizes the paper.
• APA papers use a specific headings structure to provide a clear hierarchy of information.
• In APA papers, in-text citations usually include the name(s) of the author(s) and the year of publication.
• In-text citations correspond to entries in the references section, which provide detailed bibliographical information about a source.

Tip

Be wary of quoting from sources at length. Remember, your ideas should drive the paper, and quotations should be used to support and enhance your points. Make sure any lengthy quotations that you include serve a clear purpose. Generally, no more than 10–15 percent of a paper should consist of quoted material.

The material above provides an overview of the most frequently used elements of APA formatting. You will not be quizzed on the material below. What follows is more detailed material that you can use for reference as needed when writing a research paper with a wide variety of reference types. 

A Work by One Author

Always include the author’s name and year of publication. Include a page reference whenever you quote a source directly. (See also the guidelines presented earlier in this chapter about when to include a page reference for paraphrased material.)

Two or More Works by the Same Author

At times, your research may include multiple works by the same author. If the works were published in different years, a standard in-text citation will serve to distinguish them. If you are citing multiple works by the same author published in the same year, include a lowercase letter immediately after the year. Rank the sources in the order they appear in your references section. The source listed first includes an a after the year, the source listed second includes a b, and so on.

Works by Authors with the Same Last Name

If you are citing works by different authors with the same last name, include each author’s initials in your citation, whether you mention them in the text or in parentheses. Do so even if the publication years are different.

A Work by Two Authors

When two authors are listed for a given work, include both authors’ names each time you cite the work. If you are citing their names in parentheses, use an ampersand (&) between them. (Use the word and, however, if the names appear in your sentence.)

A Work by Three to Five Authors

If the work you are citing has three to five authors, list all the authors’ names the first time you cite the source. In subsequent citations, use the first author’s name followed by the abbreviation et al. (Et al. is short for et alia, the Latin phrase for “and others.”)

Note that these examples follow the same ampersand conventions as sources with two authors. Again, use the ampersand only when listing authors’ names in parentheses.

Note how the phrase et al. is punctuated. No period comes after et, but al. gets a period because it is an abbreviation for a longer Latin word. In parenthetical references, include a comma after et al. but not before. Remember this rule by mentally translating the citation to English: “Henderson and others, 2010.”

A Work by Six or More Authors

If the work you are citing has six or more authors, list only the first author’s name, followed by et al., in your in-text citations. The other authors’ names will be listed in your references section.

A Work Authored by an Organization

When citing a work that has no individual author(s) but is published by an organization, use the organization’s name in place of the author’s name. Lengthy organization names with well-known abbreviations can be abbreviated. In your first citation, use the full name, followed by the abbreviation in square brackets. Subsequent citations may use the abbreviation only.

A Work with No Listed Author

If no author is listed and the source cannot be attributed to an organization, use the title in place of the author’s name. You may use the full title in your sentence or use the first few words—enough to convey the key ideas—in a parenthetical reference. Follow standard conventions for using italics or quotations marks with titles:

• Use italics for titles of books or reports.
• Use quotation marks for titles of articles or chapters.

A Work Cited within Another Work

To cite a source that is referred to within another secondary source, name the first source in your sentence. Then, in parentheses, use the phrase as cited in and the name of the second source author.

Two or More Works Cited in One Reference

At times, you may provide more than one citation in a parenthetical reference, such as when you are discussing related works or studies with similar results. List the citations in the same order they appear in your references section, and separate the citations with a semicolon.

Both of these researchers authored works that support the point being made in this sentence, so it makes sense to include both in the same citation.

A Famous Text Published in Multiple Editions

In some cases, you may need to cite an extremely well-known work that has been repeatedly republished or translated. Many works of literature and sacred texts, as well as some classic nonfiction texts, fall into this category. For these works, the original date of publication may be unavailable. If so, include the year of publication or translation for your edition. Refer to specific parts or chapters if you need to cite a specific section. Discuss with your instructor whether he or she would like you to cite page numbers in this particular instance.

Here, the student is citing a classic work of psychology, originally written in German and later translated to English. Since the book is a collection of Freud’s lectures, the student cites the lecture number rather than a page number.

An Introduction, Foreword, Preface, or Afterword

To cite an introduction, foreword, preface, or afterword, cite the author of the material and the year, following the same format used for other print materials.

Online Sources without Page Numbers

If an online source has no page numbers but you want to refer to a specific portion of the source, try to locate other information you can use to direct your reader to the information cited. Some websites number paragraphs within published articles; if so, include the paragraph number in your citation. Precede the paragraph number with the abbreviation for the word paragraph and the number of the paragraph (e.g., para. 4).

Even if a source does not have numbered paragraphs, it is likely to have headings that organize the content. In your citation, name the section where your cited information appears, followed by a paragraph number.

This student cited the appropriate section heading within the website and then counted to find the specific paragraph where the cited information was located.

If an online source has no listed author and no date, use the source title and the abbreviation n.d. in your parenthetical reference.

Sample Book Entry

Sample Journal Article Entry

Formatting the References Section: APA General Guidelines

1. Include the heading References, centered at the top of the page. The heading should not be boldfaced, italicized, or underlined.
2. Use double-spaced type throughout the references section, as in the body of your paper.
3. Use hanging indentation for each entry. The first line should be flush with the left margin, while any lines that follow should be indented five spaces. Note that hanging indentation is the opposite of normal indenting rules for paragraphs.
4. List entries in alphabetical order by the author’s last name. For a work with multiple authors, use the last name of the first author listed.
5. List authors’ names using this format: Smith, J. C.
6. For a work with no individual author(s), use the name of the organization that published the work or, if this is unavailable, the title of the work in place of the author’s name.

7. For works with multiple authors, follow these guidelines:

• For works with up to seven authors, list the last name and initials for each author.
• For works with more than seven authors, list the first six names, followed by ellipses, and then the name of the last author listed.
• Use an ampersand before the name of the last author listed.

8. Use title case for journal titles. Capitalize all important words in the title.

9. Use sentence case for all other titles—books, articles, web pages, and other source titles. Capitalize the first word of the title. Do not capitalize any other words in the title except for the following:

• Proper nouns
• First word of a subtitle
• First word after a colon or dash

10. Use italics for book and journal titles. Do not use italics, underlining, or quotation marks for titles of shorter works, such as articles.

Formatting Reference Entries for Different Source Types

A Book by Two or More Authors

List the authors’ names in the order they appear on the book’s title page. Use an ampersand before the last author’s name.

An Edited Book with No Author

List the editor or editors’ names in place of the author’s name, followed by Ed. or Eds. in parentheses.

An Edited Book with an Author

List the author’s name first, followed by the title and the editor or editors. Note that when the editor is listed after the title, you list the initials before the last name.

A Translated Book

Include the translator’s name after the title, and at the end of the citation, list the date the original work was published. Note that for the translator’s name, you list the initials before the last name.

A Book Published in Multiple Editions

If you are using any edition other than the first edition, include the edition number in parentheses after the title.

A Chapter in an Edited Book

List the name of the author(s) who wrote the chapter, followed by the chapter title. Then list the names of the book editor(s) and the title of the book, followed by the page numbers for the chapter and the usual information about the book’s publisher.

A Work That Appears in an Anthology

Follow the same process you would use to cite a book chapter, substituting the article or essay title for the chapter title.

An Article in a Reference Book

List the author’s name if available; if no author is listed, provide the title of the entry where the author’s name would normally be listed. If the book lists the name of the editor(s), include it in your citation. Indicate the volume number (if applicable) and page numbers in parentheses after the article title.

Two or More Books by the Same Author

List the entries in order of their publication year, beginning with the work published first.

If two books have multiple authors, and the first author is the same but the others are different, alphabetize by the second author’s last name (or the third or fourth, if necessary).

Books by Different Authors with the Same Last Name

Alphabetize entries by the authors’ first initial.

A Book Authored by an Organization

Treat the organization name as you would an author’s name. For the purposes of alphabetizing, ignore words like The in the organization’s name. (That is, a book published by the American Heart Association would be listed with other entries whose authors’ names begin with A.)

A Book-Length Report

Format technical and research reports as you would format other book-length sources. If the organization that issued the report assigned it a number, include the number in parentheses after the title. (See also the guidelines provided for citing works produced by government agencies.)

A Book Authored by a Government Agency

Treat these as you would a book published by a nongovernment organization, but be aware that these works may have an identification number listed. If so, include it in parentheses after the publication year.

An Article in a Scholarly Journal

Include the following information:

• Author or authors’ names
• Publication year
• Article title (in sentence case, without quotation marks or italics)
• Journal title (in title case and in italics)
• Volume number (in italics)
• Issue number (in parentheses)
• Page number(s) where the article appears

An Article in a Journal Paginated by Volume

In these types of journals, page numbers for one volume continue across all the issues in that volume. For instance, the winter issue may begin with page 1, and in the spring issue that follows, the page numbers pick up where the previous issue left off. (If you have ever wondered why a print journal did not begin on page 1, or wondered why the page numbers of a journal extend into four digits, this is why.) Omit the issue number from your reference entry.

An Abstract of a Scholarly Article

At times you may need to cite an abstract—the summary that appears at the beginning—of a published article. If you are citing the abstract only, and it was published separately from the article, provide the following information:

• Publication information for the article
• Information about where the abstract was published (for instance, another journal or a collection of abstracts)

A Journal Article with Two to Seven Authors

List all the authors’ names in the order they appear in the article. Use an ampersand before the last name listed.

A Journal Article with More Than Seven Authors

List the first six authors’ names, followed by a comma, an ellipsis, and the name of the last author listed. The article in the following example has sixteen listed authors; the reference entry lists the first six authors and the sixteenth, omitting the seventh through the fifteenth.

A Magazine Article

After the publication year, list the issue date. Otherwise, treat these as you would journal articles. List the volume and issue number if both are available.

A Newspaper Article

Treat these as you would magazine and journal articles, with one important difference: precede the page number(s) with the abbreviation p. (for a single-page article) or pp. (for a multipage article). For articles whose pagination is not continuous, list all the pages included in the article. For example, an article that begins on page A1 and continues on pages A4 would have the page reference A1, A4. An article that begins on page A1 and continues on pages A4 and A5 would have the page reference A1, A4–A5.

A Letter to the Editor

After the title, indicate in brackets that the work is a letter to the editor.

A Review

After the title, indicate in brackets that the work is a review and state the name of the work being reviewed. (Note that even if the title of the review is the same as the title of the book being reviewed, as in the following example, you should treat it as an article title. Do not italicize it.)

Citing Articles from Online Periodicals: URLs and Digital Object Identifiers (DOIs)

Whenever you cite online sources, it is important to provide the most up-to-date information available to help readers locate the source. In some cases, this means providing an article’s URL, or web address. (The letters URL stand for uniform resource locator.) Always provide the most complete URL possible. Provide a link to the specific article used, rather than a link to the publication’s homepage.

As you know, web addresses are not always stable. If a website is updated or reorganized, the article you accessed in April may move to a different location in May. The URL you provided may become a dead link. For this reason, many online periodicals, especially scholarly publications, now rely on DOIs rather than URLs to keep track of articles.

A DOI is a Digital Object Identifier—an identification code provided for some online documents, typically articles in scholarly journals. Like a URL, its purpose is to help readers locate an article. However, a DOI is more stable than a URL, so it makes sense to include it in your reference entry when possible. Follow these guidelines:

• If you are citing an online article with a DOI, list the DOI at the end of the reference entry.
• If the article appears in print as well as online, you do not need to provide the URL. However, include the words Electronic version after the title in brackets.
• In other respects, treat the article as you would a print article. Include the volume number and issue number if available. (Note, however, that these may not be available for some online periodicals).

An Article from an Online Periodical with a DOI

List the DOI if one is provided. There is no need to include the URL if you have listed the DOI.

An Article from an Online Periodical with No DOI

List the URL. Include the volume and issue number for the periodical if this information is available. (For some online periodicals, it may not be.)

Note that if the article appears in a print version of the publication, you do not need to list the URL, but do indicate that you accessed the electronic version.

A Newspaper Article

Provide the URL of the article.

An Article Accessed through a Database

Cite these articles as you would normally cite a print article. Provide database information only if the article is difficult to locate.

An Abstract of an Article

Format these as you would an article citation, but add the word Abstract in brackets after the title.

A Nonperiodical Web Document

The ways you cite different nonperiodical web documents may vary slightly from source to source, depending on the information that is available. In your citation, include as much of the following information as you can:

• Name of the author(s), whether an individual or organization
• Date of publication (Use n.d. if no date is available.)
• Title of the document
• Address where you retrieved the document

If the document consists of more than one web page within the site, link to the homepage or the entry page for the document.

An Entry from an Online Encyclopedia or Dictionary

Because these sources often do not include authors’ names, you may list the title of the entry at the beginning of the citation. Provide the URL for the specific entry.

Data Sets

If you cite raw data compiled by an organization, such as statistical data, provide the URL where you retrieved the information. Provide the name of the organization that sponsors the site.

Graphic Data

When citing graphic data—such as maps, pie charts, bar graphs, and so on—include the name of the organization that compiled the information, along with the publication date. Briefly describe the contents in brackets. Provide the URL where you retrieved the information. (If the graphic is associated with a specific project or document, list it after your bracketed description of the contents.)

An Online Interview (Audio File or Transcript)

List the interviewer, interviewee, and date. After the title, include bracketed text describing the interview as an “Interview transcript” or “Interview audio file,” depending on the format of the interview you accessed. List the name of the website and the URL where you retrieved the information. Use the following format.

An Electronic Book

Electronic books may include books available as text files online or audiobooks. If an electronic book is easily available in print, cite it as you would a print source. If it is unavailable in print (or extremely difficult to find), use the format in the example. (Use the words Available from in your citation if the book must be purchased or is not available directly.)

A Chapter from an Online Book or a Chapter or Section of a Web Document

These are treated similarly to their print counterparts with the addition of retrieval information. Include the chapter or section number in parentheses after the book title.

A Dissertation or Thesis from a Database

Provide the author, date of publication, title, and retrieval information. If the work is numbered within the database, include the number in parentheses at the end of the citation.

Computer Software

For commonly used office software and programming languages, it is not necessary to provide a citation. Cite software only when you are using a specialized program, such as the nutrition tracking software in the following example. If you download software from a website, provide the version and the year if available.

West, Ty. (Executive producer). (2009, September 24). PBS special report: Health care reform [Television broadcast]. New York, NY, and Washington, DC: Public Broadcasting Service.

Couture, D., Nabors, S., Pinkard, S., Robertson, N., & Smith, J. (Producers). (1979). The Diane Rehm show [Radio series]. Washington, DC: National Public Radio.

Bernanke, J., & Wade, C. (2010, January 10). Hummingbirds: Magic in the air [Television series episode]. In F. Kaufman (Executive producer), Nature. New York, NY: WNET.

Spurlock, M. (Director/producer), Morley, J. (Executive producer), & Winters. H. M. (Executive producer). (2004). Super size me. United States: Kathbur Pictures in association with Studio on Hudson.

Smith, L. W. (Speaker). (1999). Meditation and relaxation [CD]. New York, NY: Earth, Wind, & Sky Productions.

Székely, I. (Pianist), Budapest Symphony Orchestra (Performers), & Németh, G. (Conductor). (1988). Chopin piano concertos no. 1 and 2 [CD]. Hong Kong: Naxos.

Kelsey, A. R. (Writer), Garcia, J. (Director), & Kim, S. C. (Producer). (2010, May 7). Lies food labels tell us. Savvy consumer podcasts [Audio podcast]. Retrieved from http://www.savvyconsumer.org/podcasts/050710

Key Takeaways

• In APA papers, entries in the references section include as much of the following information as possible:

  • Print sources. Author(s), date of publication, title, publisher, page numbers (for shorter works), editors (if applicable), and periodical title (if applicable).
  • Online sources (text-based). Author(s), date of publication, title, publisher or sponsoring organization, and DOI or URL (if applicable).
  • Electronic sources (non-text-based). Provide details about the creator(s) of the work, title, associated company or series, and date the work was produced or broadcast. The specific details provided will vary depending on the medium and the information that is available.
  • Electronic sources (text-based). If an electronic source is also widely available in print form, it is sometimes unnecessary to provide details about how to access the electronic version. Check the guidelines for the specific source type.