Roller, B. (1997). The promise of group therapy: How to build a vigorous training and organizational base for group therapy in managed behavioral healthcare. Jossey-Bass Publishers.

Roller, Bill. The Promise of Group Therapy: How to Build a Vigorous Training and Organizational Base for Group Therapy in Managed Behavioral Healthcare. San Francisco, Calif.: Jossey-Bass Publishers, 1997.

Roller, Bill. The Promise of Group Therapy: How to Build a Vigorous Training and Organizational Base for Group Therapy in Managed Behavioral Healthcare. Jossey-Bass Publishers, 1997.