1. Cartwright, D., & Zander, A. The structural properties of groups: introduction. In D. Cartwright & A. Zander (Eds.), Group dynamics: research and theory. (2nd ed.) New York: Harper & Row, 1960. Pp. 641–668.
2. Cook, L., & French, J. R. P. Overcoming resistance to change. Human Relations, 1948, 1, 512–532.
3. Davis, J. H. Group Performance. Reading, Mass.: Addison-Wesley, 1969.
4. Harshberger, D. An investigation of structural model of a small group problem-solving. Human Relations, 1971, 24, 43–63.
5. Kahn, R. L., & Katz, D. Leadership practices in relation to productivity and morale. In D. Cartwright & A. Zander (Eds.), Group dynamics: research and theory. (2nd ed.) New York: Harper & Row, 1960, Pp. 554–570.