1Mason, R.(1994). Using Communications Media for Open and Flexible Learning. London: Kogan Pages. 被引量：1
2Juler,P.A.(1990). Promoting interaction; maintaining independence: swallowing the mixture, Open Learning, vol.5, no.2,24-33. 被引量：1
3MaIsaac, M. S.and C. N. Gunawardena. (1996) Distance Education, handbook of research for educational communications and technology.Ed. D.H. Jonassen, 403-437. New York: Macmillan Library. Reference USA. 被引量：1
4Moore, M. (1989). Three types of interaction, The American Journal of Distance Education, 2, 1-6. 被引量：1
5Reeves, T.C. (1993). Research support for interactive multimedia: existing foundations and new directions, Interactive Multimedia: practice and promise. London: Kogan Page. 被引量：1
6Rose, E. (1999). Deconstructing interactivity in educational computing, Educational Technology, 39(1), 43-49. 被引量：1
7Wagner, E. D. (1994) In support of a functional definition of interaction, The American Journal of Distance Education, Vol.8, No.2, 6-29. 被引量：1
