PFEIFFER J W. (1983). 1983 ANNUAL HANDBOOK FOR GROUP FACILITATORS. HUMAN REL. TRAINING.
Cita Chicago (17th ed.)PFEIFFER J W. 1983 ANNUAL HANDBOOK FOR GROUP FACILITATORS. CALIFORNIA: HUMAN REL. TRAINING, 1983.
Cita MLA (9th ed.)PFEIFFER J W. 1983 ANNUAL HANDBOOK FOR GROUP FACILITATORS. HUMAN REL. TRAINING, 1983.
Atenció: Aquestes cites poden no estar 100% correctes.