Gaya APA

Yalom, I, D., Leszcz, M. (2005). The Theory and Practice of Group Psychotherapy (Ed. 5). New York: Basic Book.

Gaya MLA

Yalom, Irvin, D.., Leszcz, Molyn. "The Theory and Practice of Group Psychotherapy". Ed. 5 New York: Basic Book, 2005. Text.