Cita APA (7th ed.)

Berger, M. L., & Berger, P. J. (1972). Group training techniques. Wiley.

Cita Chicago (17th ed.)

Berger, M. L., i Pam J. Berger. Group Training Techniques. New York: Wiley, 1972.

Cita MLA (9th ed.)

Berger, M. L., i Pam J. Berger. Group Training Techniques. Wiley, 1972.