1. Shaw, Marvin E. 1971.Group Dynamics: The Psychology of Small Group Behavior, 10New York: McGraw‐Hill Book Co.
2. Brilhart, John K. 1967.Effective Group Discussion, 12Dubuque, Ia.: Win. C. Brown Co., Publishers.
3. Fisher, Aubrey. 1974.Small Group Decision Making: Communication and the Group Process, 17New York: McGraw‐Hill Book Co.