Cita APA (7th ed.)

American Psychological Association. (2001). Publication manual (5a. ed.). American Psychological Association.

Cita Chicago (17th ed.)

American Psychological Association. Publication Manual. 5a. ed. Washington, D.C: American Psychological Association, 2001.

Cita MLA (9th ed.)

American Psychological Association. Publication Manual. 5a. ed. American Psychological Association, 2001.