"The Theory and Practice of Group Psychotherapy" is a comprehensive textbook authored by Molyn Leszcz and Irvin Yalom, focusing on the psychology and practice of group psychotherapy. Published by Basic Books in 2020, this revised edition spans 832 pages and delves into the theories and techniques involved in group psychotherapy. The book covers various subjects such as movements in psychoanalysis, internal medicine, and general psychotherapy, making it a valuable resource for students and professionals in the field. With its detailed content and informative approach, this hardcover textbook is a must-have for anyone interested in the theory and practice of group psychotherapy.