Cita APA (7a ed.)

(1994). Publication manual of the American Psychological Association (4th. ed.). APA.

Cita Chicago Style (17a ed.)

Publication Manual of the American Psychological Association. 4th. ed. Washington: APA, 1994.

Cita MLA (9a ed.)

Publication Manual of the American Psychological Association. 4th. ed. APA, 1994.