Cita APA (7th ed.)

American Psychological Association & APA. (1994). Publication manual (4a. ed.). American Psychological Association.

Cita Chicago (17th ed.)

American Psychological Association i APA. Publication Manual. 4a. ed. Washington, D.C: American Psychological Association, 1994.

Cita MLA (9th ed.)

American Psychological Association i APA. Publication Manual. 4a. ed. American Psychological Association, 1994.