Cita APA (7th ed.)

Lefton, L. A. (1997). Psychology (6th ed.). Kentucky State University.

Cita Chicago (17th ed.)

Lefton, Lester A. Psychology. 6th ed. Kentucky: Kentucky State University, 1997.

Cita MLA (9th ed.)

Lefton, Lester A. Psychology. 6th ed. Kentucky State University, 1997.