"The American Psychological Association (APA) is the largest scientific and professional organization representing psychology in the United States. APA is the world's largest association of psychologists, with nearly 130,000 researchers, educators, clinicians, consultants and students as its members." See http://www.acs.org/content/acs/en/about.html for additional details about APA.
Electronic Styles: A Handbook for Citing Electronic Citations
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Publication Manual of the American Psychological Association
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