Publication manual of the American Psychological Association.

MLA

Publication Manual of the American Psychological Association. 6th ed. Washington, DC: American Psychological Association, 2012.

APA

(2012). Publication manual of the American Psychological Association. 6th ed. Washington, DC: American Psychological Association.

Chicago

Publication Manual of the American Psychological Association. 6th ed. Washington, DC: American Psychological Association, 2012.