Gaya APA

Yalom, I, D., Leszcz, M. (2020). The Theory and Practice of Group Psychotherapy (6th Edition). United States of America: Basic Books, Hachette Book Group.

Gaya MLA

Yalom, Irvin, D.., Leszcz, Molyn. "The Theory and Practice of Group Psychotherapy". 6th Edition United States of America: Basic Books, Hachette Book Group, 2020. Text.