A manual for writers of research papers, theses, and dissertations, 7th edition - Kate L. Turabian 2007

Articles published online
Parenthetical citations–reference list style: citing specific types of sources
Part II. Source Citation

For online journals, follow the guidelines for articles in print journals. In addition, include the URL and the date you accessed the material in your reference list (see 15.4.1). Note that a URL alone is not sufficient; you must provide the full facts of publication, as far as they can be determined, so that a reader can search for the source even if the URL changes. Articles in online journals might not include page numbers, especially if they are not published in parallel print journals. If page numbers are not available, you may identify the location of a cited passage in a parenthetical citation by adding a descriptive locator (such as a preceding subheading) following the word under.

R: Uzzi, Brian, and Jarrett Spiro. 2005. Collaboration and creativity: The small world problem. American Journal of Sociology 111, no. 2 (September). http://www.journals.uchicago.edu/AJS/journal/issues/v111n2/090090/090090.html (accessed December 19, 2005).

P: (Uzzi and Spiro 2005, under “Milgram's small world theory”)

or

(Uzzi and Spiro 2005)

Online databases of articles generally list all the elements necessary for citations. Include the stable URL listed, which also identifies the database in which you consulted the article.

R: Shapiro, Lawrence A. 2000. Multiple realizations. Journal of Philosophy 97, no. 12 (December): 635—54. http://links.jstor.org/sici?sici=0022—362X%28200012%2997%3A12%3C635%3AMR%3E2.0.CO%3B2-Q (accessed June 27, 2006).

P: (Shapiro 2000, 642)