If I'm using a book that is a specific edition, where do I include the edition information in my reference?
According to the American Psychological Association (2010), when formatting the title information for a nonperiodical (e.g., books and reports):
Enclose additional information given on the publication for its identification and retrieval (e.g., edition, report number, volume number) in parentheses immediately after the title. Do not use a period between the title and the parenthetical information; do not italicize the parenthetical information. (p. 185)
The APA manual provides a couple of examples on page 205 of references to specific editions of resources (see examples 28 and 30); however, please see below for a sample reference, as well as the edition noted in the reference to the APA manual below.
Kouzes, J., & Posner, B. (2012). The leadership challenge (5th ed.). San Francisco, CA: Jossey-Bass.
American Psychological Association. (2010). Publication manual of the American Psychological Association (6th ed.). Washington, DC: Author.