Professional Associations
- American Board of Professional Psychology (ABPP)
- American Group Psychotherapy Association (AGPA)
- American Society of Group Psychotherapy and Psychodrama (ASGPP)
- ASA: Social Psychology Section
- Association for Specialists in Group-Work (ASGW)
- Canadian Group Psychotherapy Association
- Center for the Study of Group Processes (University of Iowa)
- Center for the Study of Group Processes (Univeristy of Kent)
- Center for Research on Group Processes (University of Queensland)
- Center for the Study of Work Teams
- East Side Institute for Group and Short Term Psychotherapy (Lois Holzman)
- Eastern Group Psychotherapy Society
- Group Analytic Society
- GroupNet (Dr. Donelson Forsyth)
- Group Psychotherapy (for the layman)
- Institute for Field Research on Organizations and Groups
- International Association of Group Psychotherapy
- Mid-Atlantic Group Psychotherapy Society
- Systems-Centered Institute
- The Tavistock Institute
- Westchester Group Psychotherapy Association
Journals, Books, & Miscellaneous Websites
- Group Analysis
- Group Dynamics: Theory, Research, and Practice (APA)
- Group Processes & Intergroup Relations
- European Journal of Social Psychology
- International Journal of Group Psychotherapy
- Journal of Applied Social Psychology
- Journal of Child and Adolescent Group Therapy
- Journal of Management
- Journal of Organizational Behavior
- Journal for Specialists in Group Work
- NASA - Teams & Teamwork
- Organizational Behavior & Human Decision Processes
- Small Group Research
- Social Psychology Quarterly
- Social Work
- The First T-Group (Bethel, Maine, 1947)