The Publication Manual of the American Psychological Association (APA), seventh edition, is the official source for APA Style. It is the style manual of choice for writers, researchers, editors, students, and educators in the social and behavioral sciences, natural sciences, nursing, communications, education, business, engineering, and other fields.There are two copies available in the Library: one on Reserves at the iDesk for in-library use (two hours at a time), and the other is located in BOOKS on the 4th Floor.