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Citation Style Guide

How to cite electronic documents in AMA, APA, MLA, and Chicago styles, plus links to further information on these style formats.

Online Journal Article

Guidelines for online journal articles generally follow guidelines for print articles with the addition of the article URL.

Since URLs to online materials can change, the APA recommends providing a Digital Object Identifier (DOI) over a URL, when it is available.

The retrieval date is only necessary if the information is likely to be updated or changed in the future. Include as much information as provided by the publisher.


Author, A. A. (Year published or "n.d." if no date is present). Title of article. Title of  Periodical, volume number, (issue number if available), page number. Retrieved month, day, year (if necessary) from http://www.completeaddress/url/.

Sumner, J., & Ross, T. (2002, July 25). A semi-quantitative seafood safety risk assessment. International Journal of Food Microbiology, 77(1/2), 55. Retrieved September 18, 2008, from Academic Search Premier database, =true&db=aph&AN=7800302&site=ehost-live


Online Periodical with DOI Assigned

Author, A. A., & Author, B. B. (Date of publication). Title of article. Title of Journal, volume number, page range. doi:0000000/000000000000

Website Material with no author, year, or pages numbers

Include title, or a shortened title and "n.d." to indicated no date.


Title, or shortened title. (n.d.). In Name of the website.  Retrieved month,

day, year (if necessary) from http://www.completeadress/url/


Jam and bread. (n.d.). In A recipe a day.  Retrieved January 4, 2009 from


APA guides at the library

Publication Manual of the Psychological Association  
Call Number: BF 76.7 A46 2001
5th edition
Location: Reserve Desk

The world's easiest guide to using the APA - Carol J. Amato  
Call Number: BF 76.7 A62 1995
Location: Reserve Desk

Mastering APA style : instructor's resource guide 
Call Number: BF 76.7 G44 2002
5th edition
Location: Reserve Desk


APA Style Blog

The APA Style Blog is the official companion to the Publication Manual of the American Psychological Association, Sixth Edition.

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