Παραπομπή APA

Mager, R. F. (1976). Developing vocational instruction. Fearon Publishers.

Παραπομπή Chicago Style

Mager, Robert F. Developing Vocational Instruction. California: Fearon Publishers, 1976.

Παραπομπή MLA

Mager, Robert F. Developing Vocational Instruction. Fearon Publishers, 1976.