APA (7th ed.) Citation

Mackenzie, N., & et al.;Mackenzie, N. (1975). Open learning: Systems and problems in post-secondary education. UNESCO Press.

Chicago Style (17th ed.) Citation

Mackenzie, Norman, and Norman et al.;Mackenzie. Open Learning: Systems and Problems in Post-secondary Education. UNESCO Press, 1975.

MLA (9th ed.) Citation

Mackenzie, Norman, and Norman et al.;Mackenzie. Open Learning: Systems and Problems in Post-secondary Education. UNESCO Press, 1975.