Cita APA (7th ed.)

Kouzes, J. M., & Posner, B. Z. (2007). The leadership challenge (4th ed.). Jossey-Bass.

Cita Chicago (17th ed.)

Kouzes, James M., i Barry Z. Posner. The Leadership Challenge. 4th ed. San Francisco, USA: Jossey-Bass, 2007.

Cita MLA (9th ed.)

Kouzes, James M., i Barry Z. Posner. The Leadership Challenge. 4th ed. Jossey-Bass, 2007.