1. Armstrong J. (1980). Concluding session: Key issues in evaluating in distance teaching. In J. Armstrong & R. Moon (Eds.) Evaluation in distance teaching. (ERIC Document Reproduction Service No. ED 223125)
2. Beeken J. (1991). Development of a compressed video evaluation scale. Unpublished manuscript. University of Wyoming Laramie.
3. Beer CT. & Darken wald G.G. (1989). Gender differences in adult student perceptions of college classroom social environments. Adult Education Quarterly 40 33-42.
4. Cookson P. (1989). Research on learners and learning in distance education: A review. The American Journal of Distance Education 3 22-34.
5. Dirr P. (1986). Evaluating distance education. Distance II: Improving teaching at a distance. Report of the Annual Conference on Teaching at a Distance (pp. 1-13). University of Wisconsin Madison.