The Learning APA guide from Rutgers New Brunswick will help you with APA style.
APA Citation Style, 6th edition (Gisela Butera, George Washington University)
This library guide is especially useful for the page about government documents, a subject upon which APA says far too little.
Referencing@Portsmouth (University of Portsmouth, UK)
Interprets a wide variety of APA style questions that are otherwise hard to find. Includes, for example, suggestions for unpublished internal documents.
APA Formatting and Style Guide (Purdue University Online Writing Laboratory)
Hinton, A. L. (1999). Biocultural approaches to the emotions. Cambridge, U.K; New York: Cambridge University Press.
Scholarly Article from an Online Database (with and without doi)
Yarcheski, A., Mahon, N., Yarcheski, T., Hanks, M., & Cannella, B. (2009). A meta-analytic study of predictors of maternal-fetal attachment. International Journal of Nursing Studies, 46(5), 708-715. doi:10.1016/j.ijnurstu.2008.10.013
Yarcheski, A., Mahon, N., Yarcheski, T., Hanks, M., & Cannella, B. (2009). A meta-analytic study of predictors of maternal-fetal attachment. International Journal of Nursing Studies, 46(5), 708-715. Retrieved from http://www.sciencedirect.com.
Article from a Scholarly Journal (Print)
Watson, J. D., & Crick, F. H. (1953). A structure for deoxyribose nucleic acid. Nature, 171, 737-738.
Article from a Newspaper (Online Database)
Jane E. Brody. (2009, June 23). A personal, coordinated approach to care. New York Times, The (NY), Late Edition - Final ed., 7. Retrieved July, 15 2009 from Access World News database.
Non-Periodical Web Document, Web Page, or Report
Lynch, J. (Updated January 7, 2006). Literary Resources on the Net.
Retrieved July 15, 2009, from http://andromeda.rutgers.edu/~jlynch/Lit/