Howell, J. P., & Costley, D. L. (2001). Understanding behaviors for effective leadership. Prentice-Hall.
Citazione stile Chigago Style (17a edizione)Howell, Jon P., e Dan L. Costley. Understanding Behaviors for Effective Leadership. Upper Saddle River, NJ: Prentice-Hall, 2001.
Citatione MLA (9a ed.)Howell, Jon P., e Dan L. Costley. Understanding Behaviors for Effective Leadership. Prentice-Hall, 2001.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.