1. Bales, R. F. Interaction process analysis: A method for the study of small groups.Reading, MA: Addison-Wesley, 1950
2. Hiltz, S. R, & Turoff, M.The network nation: Human communication via computer.Reading, MA: Addison-Wesley, 1978.
3. Johansen, R., MacNeal, B. & Nyham, M.Telecommunications and developmentally disabled people.Menlo Park, CA: Institute for the Future, 1981.
4. Johansen, R, Vallee, J. & Spangler, K.Electronic meetings.Reading, MA: Addison-Wesley, 1979.
5. Jones, S. E., Barnlund. D. C. & Haiman, F. S.The dynamics of discussion.New York: Harper &Row, 1980.