Cita APA (7a ed.)

(2001). Publication manual of the American psychological association (5th ed.). American Psychological Association.

Cita Chicago Style (17a ed.)

Publication Manual of the American Psychological Association. 5th ed. Washington,DC: American Psychological Association, 2001.

Cita MLA (9a ed.)

Publication Manual of the American Psychological Association. 5th ed. American Psychological Association, 2001.