Publication Manual of the American Psychological Association, Fifth Edition
Concise Rules Of Apa Style (Concise Rules of the American Psychological Association (APA) Style)
Merriam-Webster's Collegiate Dictionary, 11th Edition
(with CD Rom)Merriam-Webster's Collegiate Dictionary, 11th Edition (Book Only)
Other Helpful Books & Manuals:
APA: The Easy Way!
by Peggy M. Houghton et al.Mastering APA Style: Student's Workbook and Training Guide Fifth Edition
by Harold Gelfland et al.Pocket Guide to Apa Style
by Robert Perrin.