The official style manual for the APA. The website at http://www.apastyle.org/ offers some interactive tutorials and help with citing electronic sources. The 6th edition is the most recent, published in 2010.
An EasyGuide to APA Style
Location: Mugar Reference X BF76.7 .S39 2014
Publication Date: 2013
Presents easy-to-understand explanations of how to write research papers, cite research, and do any work requiring APA format.