Kouzes, J. M., & Posner, B. Z. (2013). Finding the courage to lead. Leadership Challenge.
Lua i Stíl Chicago (17ú heag.)Kouzes, James M., agus Barry Z. Posner. Finding the Courage to Lead. San Francisco, Calif.: Leadership Challenge, 2013.
Lua MLA (9ú heag.)Kouzes, James M., agus Barry Z. Posner. Finding the Courage to Lead. Leadership Challenge, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.