1. Allport, F. H. (1920). The influence of the group upon association and thought. Experimental Psychology, 3, 159–182.
2. Aronson, E., & Mills, J. (1959). The effect of severity of initiation on liking for a group. Journal of Abnormal and Social Psychology, 59, 177–181.
3. Bales, R. F. (1950). Interaction process analysis: A method for the study of small groups. Addison-Wesley.
4. Bales, R. F. (1953). The equilibrium problem in small groups. In T. Parsons, R. F. Bales, & E. A. Shils (Hrsg.), Working papers in the theory of action (S. 111–161). Free Press.
5. Bales, R. F., & Slater, P. E. (1955). Role differentiation in small decision-making groups. In T. Parsons & R. F. Bales (Hrsg.), Family, socialization, and interaction process (S. 259–306). Free Press.