Cita APA (7a ed.)
Mackenzie, N. (1975). Open learning: Systems and problems in post-secondary education. UNESCO press.
Cita Chicago Style (17a ed.)
Mackenzie, Norman. Open Learning: Systems and Problems in Post-secondary Education. New York: UNESCO press, 1975.
Cita MLA (9a ed.)
Mackenzie, Norman. Open Learning: Systems and Problems in Post-secondary Education. UNESCO press, 1975.
Precaución: Estas citas no son 100% exactas.