Cita APA (7th ed.)

Howell, J. P., & Costley, D. L. (2006). Understanding Behaviors for Effective Leadership (2nd ed.). Prentice-Hall of India Private Limited.

Cita Chicago (17th ed.)

Howell, Jon P., i Dan L. Costley. Understanding Behaviors for Effective Leadership. 2nd ed. New Delhi: Prentice-Hall of India Private Limited, 2006.

Cita MLA (9th ed.)

Howell, Jon P., i Dan L. Costley. Understanding Behaviors for Effective Leadership. 2nd ed. Prentice-Hall of India Private Limited, 2006.