Schultz, D. P., & Schultz, S. E. (1986). Psychology and industry today: An introduction to industrial and organizational psychology (4th ed.). Macmillan.

Schultz, Duane P., and Sydney Ellen Schultz. Psychology and Industry Today: An Introduction to Industrial and Organizational Psychology. 4th ed. New York: Macmillan, 1986.

Schultz, Duane P., and Sydney Ellen Schultz. Psychology and Industry Today: An Introduction to Industrial and Organizational Psychology. 4th ed. Macmillan, 1986.