Cita APA (7th ed.)

Mager, R. F., & Beach, K. M. (1967). Developing vocational instruction. Fearon Publishers.

Cita Chicago (17th ed.)

Mager, Robert Frank, i Kenneth M. Beach. Developing Vocational Instruction. Palo Alto, Calif.: Fearon Publishers, 1967.

Cita MLA (8th ed.)

Mager, Robert Frank, i Kenneth M. Beach. Developing Vocational Instruction. Fearon Publishers, 1967.