Παραπομπή APA

Schaefer, S. D. (1979). The motivation process. Prentice Hall of India.

Παραπομπή Chicago Style

Schaefer, Susan Davidson. The Motivation Process. New Delhi: Prentice Hall of India, 1979.

Παραπομπή MLA

Schaefer, Susan Davidson. The Motivation Process. Prentice Hall of India, 1979.