Apa Format Citation Example For Multiple Authors Bibliography

American Psychological Association (APA) style is commonly used for citing references in student papers in science, medical, public health, health sciences and nursing as well as the social science.

 The purpose of documentation is to:

  • Identify (cite) other people’s ideas and information used within your essay or term paper.
  • Indicate the authors or sources of these in a References list at the end of your paper.

This guide is based on the APA Manual (6th ed.) that was published in 2009.

The following sections provide you with information and examples that will help you to cite the sources that you come across during your research. 

General Style Guidelines


Journal/Magazine Articles

Web Sites

Audiovisual Media


Other Sources

For more examples and information, consult the following publications:

APA Manual (6th ed.)

BF76.7 .P83 2010  Main Reference Collection 1st Floor


APA: General

General Rules for APA Format

Author Rules:

Authors should be alphabetized by the last name of the first author of each work. If you want to cite multiple articles by the same author, list entries in chronological order from earliest to most recent.

Works With No Authors

If there is no author given, begin your citation with the name of the primary source/article.


Global Warming. (2006). San Diego: Greenhaven Press.

Citing One Author

When citing authors, use the last name followed by the first initial and middle initial (if given).


Last, F. M.


Dickens, C.

Citing Two Authors

If you are citing more than one author, separate the authors by commas alphabetically. The first author should have their last name, first name and the additional authors should be cited simply with their first and last name.


Last, F. M., Last, F. M., Last, F. M., Last, F. M., Last, F. M., Last, F. M., et al.

Citing More Than Six Authors

If there are more than six authors, cite the first six and then write "et al."


Dickens, C. & Bellow, S.

Author as an Organization

Write the organization as the author.


New York State Association of Counties. (2009).

Contributor Rules


Sometimes the main contributor is not an author, but another contributor type, such as an editor or conductor. Follow the contributor by an abbreviation of the contributor type (i.e. Ed. or Cond.).

  • One editor:

    Smith, J. K. (Ed.). (Date). Title.

  • One conductor:

    Smith, J. K. (Cond). (Date). Title.

Note: If plural, then change the abbreviation accordingly.

  • Two editors:

    Smith, J. K., & Sampson, T. (Eds.). (Date). Title.

Date Rules

For a book

  • Place the year published information after the author information.

    Example: Bellow, S. (1999).

  • If there is no author, place the year published after the edition.

    Example: The Catcher in the Rye (1st ed.). (1951). Boston, MA: Little, Brown.

  • If the author information or edition/page number are not given, place the year published after the title of the piece.

    Example: The Catcher in the Rye. (1951). Boston, MA: Little, Brown.

Page Rules

  • Refer to a page with a "p."

    Example: p. 1

  • Numerous pages with a "pp."

    Example: pp.1-5

Style Rules

  • Italicize longer works including books and journals.
  • Do not italicize, underline, or put quotes around titles of short works, including journal articles or essays in edited collections.

Web Rules


APA 6 recommends to only cite the homepage URL, and only the exact URL if the page is not properly indexed or easy to find from the homepage. For blog posts, user contributed content, and discussion forums, APA 6 recommends including the exact URL.

Date Retrieved:

APA 6 recommends including it only if the source material may change over time. Also keep in mind that you can use "Available from" instead of "Retrieved from" when the URL leads to information on how to obtain the cited material rather than to the material itself.


If an article has a digital object identifier (DOI) number, you need only the DOI number, and no URL or retrieval date.

Sources Published Directly Online

Citing an Article from an Online Only Resource


Freidland, L. (2008, September 22). Top 10 natural and wildlife adventure travel trips. Retrieved from http://adventuretravel.about.com.

Citing an Entire Website with no Identifiable Electronic Publication Date


EasyBib.com. (n.d.). Retrieved June 22, 2009, from http://www.easybib.com

Citing an Article from an Online Only News Source


Chen, S. (2009, May 7). Growing up is hard with mom in prison. CNN. Retrieved http://www.cnn.com

Citing an Article from an Online Newspaper


Shorto, R. (2009, April 29). Going Dutch. The New York Times. Retrieved from http://www.nytimes.com


When citing online sources in APA, generally follow the same structure of its in print equivalent, and then follow this information with the date of access and the URL.

Citing an Online Only Journal


Glotzer, R., & Federlein, A. (2007). Miles that bind: Commuter marriage and family strength. Michigan Family Review, 12, 7-31. Retrieved June 22, 2009, from http://quod.lib.umich.edu/cgi/t/text/textidx?c=mfr;cc=mfr;q1=Miles%20that%20Bind;rgn=main;view=text;idno=4919087.0012.102


The above example has a poorly indexed URL and the material may change over time. Hence the URL is included.

Citing a Journal Article With a Digital Object Identifier


Oakley, R. (2004). How the mind hurts and heals the body.American Psychologist, 12(1), 25-47. doi: 10.1037/0003-066X.59.1.29.

Citing an Online-Only book


Eckel, B. (n.d.). Thinking in Java (3rd ed.). Retrieved from http://www.bruceeckel.com


Artist Last, First M. "Track Name." Recorded Month Date, Year. In Album Name By Writer First M. Last. Cond. Conductor First M. Last. Orch. First M. Last. Perf. First M. Last. Band/Group Name. Rec. Date Month Year. Producer First M. Last, Year. CD/MP3, MIDI, Cassette/Vinyl.


Lady Gaga Born This Way Rec. 2011. Vincent Herbert, 2011. CD.

Web Rules


Contributors. "Title." Website. Edition. Website Publisher, Date. Web. Date Accessed.

Sources Published Directly Online

Citing an Article from an Online Only Resource


Friedland, Lois. "Top 10 Natural and Wildlife Adventure Travel Tips." About.com New York Times Company, 22 Sept. 2008. Web. 25 Sept. 2008.

Citing an Entire Website with No Identifiable Electronic Publication Date


EasyBib.com ImagineEasy Solutions, n.d. Web. 8 May 2009.


Newspaper and magazine websites are considered non-periodical, directly published online sources even if they have in-print copies. Follow the published directly online format.

Citing an Article from an Online Only News Source


Chen, Stephanie. "Growing up is Hard with Mom in Prison." CNN.com Cable News Network, 7 May 2009. Web. 8 May 2009.

Citing an Article from an Online Newspaper


Shorto, Russell. "Going Dutch." New York Times New York Times, 3 May 2009. Web. 8 May 2009.

Citing an Online Only Journal


Glotzer, Richard and Anne Federlein. "Miles that Blind: Commuter Marriage and Family Strength." Michigan Family Review 12 (2007): 7-31. Web. 8 Apr. 2009.

Personal Website


Last name, First name. Page Cited. Web. Date Accessed.


Smith, Steve. Home Page. Web. 3 January 2013.

Publication information:

Sources Published Indirectly Online

As opposed to some sources published directly online (by a website), other sources may be originally in print, or in another medium, and found online. Cite these sources as you would in their original form, and then add the relevant web information (date accessed and URL).

Citing a Book Originally in Print Found Online


Catton, B. (2005). The Civil War. Boston: Houghton Mifflin. Retrieved from http://www.books.google.com

Citing a Newsletter Found Online With No Page Information


Puzzanchera, C. (2009, April). Juvenile arrests 2007. Juvenile Justice Bulletin. Retrieved from http://www.ncjrs.gov.

Citing a Video Found Online


West, K. (2009). Amazing [Online Video]. Roc-A-Fella Records. Retrieved from http://www.youtube.com/watch?v=at4OQvNlxSw.


Because this is from a website with user generated content, the exact URL is included, instead of the homepage.

Citing a Painting Viewed Online


Picasso, P. (1921). Three musicians [Painting found in Museum of Modern Art, New York]. Retrieved from http://www.artquotes.net

Citing a Blog Post


Schonfled, E. (2009, September 13). Shutterfly buys Tiny Pictures for a tiny price. TechCrunch. Retrieved from http://www.techcrunch.com


Because blog posts are informally published, do not italicize the article titles.

Citing an Originally in Print Journal Article Found in a Database


Ahn, H., & Kim, K. (2008). Using genetic algorithms to optimize nearest neighbors for data mining. Annals of Operations Research, 263(1), 5-18. Retrieved from Academic Search Premier.


Sources found in online Databases typically have been published elsewhere. Include as much as the original publication information as possible.

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