Cita APA (7a ed.)

Unwin, D., Mac Aleese, R., & Hubbard, G. (1988). The encyclopaedia of educational media communications and technology (2nd ed.). Greenwood Press.

Cita Chicago Style (17a ed.)

Unwin, Derick, Ray Mac Aleese, y Geoffrey Hubbard. The Encyclopaedia of Educational Media Communications and Technology. 2nd ed. New York [etc.]: Greenwood Press, 1988.

Cita MLA (9a ed.)

Unwin, Derick, et al. The Encyclopaedia of Educational Media Communications and Technology. 2nd ed. Greenwood Press, 1988.