Kouzes, J. M., & Posner, B. Z. (2010). The leadership challenge (3rd.). Wiley India (P) Ltd.
Lua i Stíl Chicago (17ú heag.)Kouzes, James M., agus Barry Z. Posner. The Leadership Challenge. 3rd. New Delhi: Wiley India (P) Ltd, 2010.
Lua MLA (9ú heag.)Kouzes, James M., agus Barry Z. Posner. The Leadership Challenge. 3rd. Wiley India (P) Ltd, 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.