Cita APA (7th ed.)
(2001). Publication manual of the American psychological association (5th ed.). American Psychological Association.
Cita Chicago (17th ed.)
Publication Manual of the American Psychological Association. 5th ed. Washington,DC: American Psychological Association, 2001.
Cita MLA (9th ed.)
Publication Manual of the American Psychological Association. 5th ed. American Psychological Association, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.