Παραπομπή APA

Schafer, W. (2000). Stress management (4th ed.). Cengage Learning.

Παραπομπή Chicago Style

Schafer, Walt. Stress Management. 4th ed. Australia: Cengage Learning, 2000.

Παραπομπή MLA

Schafer, Walt. Stress Management. 4th ed. Cengage Learning, 2000.