Source Materials 

Jackling, N. Weaving my own design. In M. Parer (ed.) Development, design, and distance education. Churchill, Australia: Centre for Distance Learning, Monash University, 1989.

Keegan, D. The foundations of distance education. London: Croom Helm, 1996.

Keegan, D. (ed.) Theoretical principles of distance education. London: Routledge, 1993.

Koul, B.N., and J. Jenkins (eds.) Distance education: a spectrum of case studies. London: Kogan Page, 1993.

Mugridge, I. (ed.) Distance education in single and dual mode universities. Vancouver: The Commonwealth of Learning, 1992.

Mugridge, I. The language of distance and open learning. Journal of Distance Education, IV: 2, pp. 83–85, 1989.

Sewart, D. et al. (eds.). Distance education: international perspectives. London: Croom Helm, 1983.

Sparkes, J. The problem of creating a discipline of distance education. Distance Education, 4:2, pp. 179–86, 1983.