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.
Lua i Stíl Chicago (17ú heag.)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.
Lua MLA (8ú heag.)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.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.