American Psychological Association. (2010). Publication manual of the American Psychological Association (Sixth edition.). American Psychological Association.
Cita Chicago (17th ed.)American Psychological Association. Publication Manual of the American Psychological Association. Sixth edition. Washington, DC: American Psychological Association, 2010.
Cita MLA (8th ed.)American Psychological Association. Publication Manual of the American Psychological Association. Sixth edition. American Psychological Association, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.