EndNote provides a number of subject based journal title term lists so that journal names in your bibliography can be presented in either the full name or abbreviation as your style requires. To set up your required journal term list, follow the directions in the CSU EndNote Manual. The procedure is also shown in the video below.
CSU Recommended style
American Psychological Association. (2010). Publication manual of the American Psychological Association , (Sixth edition. ed.). Washington, D.C.: American Psychological Association.
Beins, Bernard C. (2012). APA Style Simplified : Writing in Psychology, Education, Nursing, and Sociology. Retrieved from http://www.eblib.com
The Chicago manual of style : the essential guide for writers, editors, and publishers. (2010) (16th ed.). Chicago, London: The University of Chicago Press.
Gibaldi, J. (2008). MLA style manual and guide to scholarly publishing (3rd ed. ed.). New York: Modern Language Association of America.