Dessler, G., & Varkkey, . B. (2009). Human resource management (11th ed.). Pearson Prentice Hall.

Dessler, Gary, and Biju Varkkey. Human Resource Management. 11th ed. Upper Saddle River, NJ ; New Delhi: Pearson Prentice Hall, 2009.

Dessler, Gary, and Biju Varkkey. Human Resource Management. 11th ed. Pearson Prentice Hall, 2009.