Mager, R. F., & Beach, K. M. (1967). Developing vocational instruction. Fearon Publishers.
Dyfyniad Arddull ChicagoMager, Robert Frank, and Kenneth M. Beach. Developing Vocational Instruction. Palo Alto, Calif.: Fearon Publishers, 1967.
Dyfyniad MLAMager, Robert Frank, and Kenneth M. Beach. Developing Vocational Instruction. Fearon Publishers, 1967.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.