1. Arlow, J. A. (1961). Ego psychology and the study of mythology. Journal of the American Psychoanalytic Association, 9, 371–393.
2. Back, K. W. (1951). Social influences on persistence and change of attitudes. Journal of Abnormal and Social Psychology, XLVI, 9–23.
3. Bion, W. R. (1959). Experiences in groups. New York, NY: Basic Books.
4. Cartwright, D. (1968). The nature of group cohesiveness. In D. Cartwright & A. Zander (Eds.), Group dynamics: Research and theory. New York, NY: Harper and Row.
5. Cartwright, D., & Zander, A. (Eds.). (1968). Group dynamics: Research and theory. New York, NY: Harper and Row.