1. Becker, S.L., Rating Scales, dans Methods of Research in Communication, New York: Houghton Mifflin Co., 1970.
2. Flanders, N.A., Analysing Teaching Behavior, Reading MA: Addison Wesley, 1970.
3. Galloway, C.M., An Exploratory Study of Observational Procedures for Determining Teacher Nonverbal communication, Thèse (non publiée) de Ph.D., University of Florida, 1962.
4. Galloway, C.M., Non-verbal Communication, Theory into Pratice, VII, décembre 1968.
5. Grant, B.M. et D.G. Hennings, The Teacher Moves, New York: Teachers College Press, 1971.