Cita APA (7th ed.)

Lefton, L. A., & Valvatne, L. (1988). Mastering psychology (3rd ed.). Allyn & Bacon.

Cita Chicago (17th ed.)

Lefton, Lester A., i Laura Valvatne. Mastering Psychology. 3rd ed. Boston: Allyn & Bacon, 1988.

Cita MLA (9th ed.)

Lefton, Lester A., i Laura Valvatne. Mastering Psychology. 3rd ed. Allyn & Bacon, 1988.