Q. What do I do if I can't find the DOI number for my journal article?

For APA Style:

If you do not find a DOI number for the article or online publication, then use the URL for the database or the web page.   See the following examples…

Database:

Mershon, D.H.  (2005, November-December).  Star Trek on the brain: Alien minds, human minds.  

          American Scientist, 86(2), 585. Retrieved from http://www.galileo.usg.edu

Web site:

Lynch, T. (2007).  DS9 trials and tribble-ations review.  Retrieved from Psi Phi:

            Bradley’s Science Fiction Club Web site: http://www.bradley.edu/campusorg/

            psiphi/DS9/ep/503.html