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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

Basic format for a reference to an article in an online journal without DOI:

AuthorLastname FirstInitial.Title of article in sentence case. Abbreviated Title of Periodical. (Use National Library of Medicine abbreviations) Year;vol(issue#):PP-PP. URL (copy and paste the url which will go most directly to the article--no need to use "URL"). Published [date]. Updated [date]. Accessed [date]. (accessed date is often the only date available)


1.  Duchin JS. Can preparedness for biological terrorism save us from pertussis? Arch Pediatr Adolesc Med. 2004:158(2):106-107. Accessed June 1, 2004.

Online journal article with DOI Assigned:

AuthorLastname FirstInitial.Title of article in sentence case. Abbreviated Title of Periodical. (Use National Library of Medicine abbreviations) Year;vol(issue#):PP-PP. DOI (no need to use URL or access date).

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

AMA Manual of Style @LLU

AMA Style Insider