Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

Berger, Melvyn Louis, i Pam J. Berger. Group Training Techniques. [Epping]: Gower Press, 1972.

Cita MLA (9th ed.)

Berger, Melvyn Louis, i Pam J. Berger. Group Training Techniques. Gower Press, 1972.