Cita APA

Kouzes, J. M., & Posner, B. Z. (2006). Leadership challenge. Wiley-Dreamtech.

Chicago Edition Citation

Kouzes, James M., i Barry Z. Posner. Leadership Challenge. New Delhi: Wiley-Dreamtech, 2006.

Cita MLA

Kouzes, James M., i Barry Z. Posner. Leadership Challenge. Wiley-Dreamtech, 2006.