APA استشهاد

Berger, M. [., & Berger, P. (1972). Group training techniques. Gower.

استشهاد بنمط شيكاغو

Berger, M.L. [ed.], و P.J Berger. Group Training Techniques. Epping: Gower, 1972.

MLA استشهاد

Berger, M.L. [ed.], و P.J Berger. Group Training Techniques. Gower, 1972.