APA (7th ed.) Citation

MacKenzie, N., Postgate, R. S., & Scupham, J. (1975). Open learning: Systems and problems in post-secondary education. Unesco Press.

Chicago Style (17th ed.) Citation

MacKenzie, Norman, Richmond Seymour Postgate, and John Scupham. Open Learning: Systems and Problems in Post-secondary Education. Paris: Unesco Press, 1975.

MLA (8th ed.) Citation

MacKenzie, Norman, et al. Open Learning: Systems and Problems in Post-secondary Education. Unesco Press, 1975.