Dubin, F., & Olshtain, E. (1986). Course design: Developing programs and materials for language learning. Cambridge University Press.

Dubin, Fraida, and Elite Olshtain. Course Design: Developing Programs and Materials for Language Learning. Cambridge [Cambridgeshire] ; New York: Cambridge University Press, 1986.

Dubin, Fraida, and Elite Olshtain. Course Design: Developing Programs and Materials for Language Learning. Cambridge University Press, 1986.