Robbins, S. P., & Judge, T. (2009). Organizational behavior (13th ed.). Pearson Prentice Hall,.

Robbins, Stephen P., and Tim Judge. Organizational Behavior. 13th ed. Upper Saddle River, N.J. : New York: Pearson Prentice Hall,, 2009.

Robbins, Stephen P., and Tim Judge. Organizational Behavior. 13th ed. Pearson Prentice Hall,, 2009.