APA Style

Kouzes, J, M., Posner, B, Z. (1995). The leadership challenge : how to keep getting extraordinary things done in organizations / James M. Kouzes, Barry Z. Posner. (2ND ED.). San Francisco: Jossey-Bass Publishers.

MLA Style

Kouzes, James, M.., Posner, Barry, Z.. "The leadership challenge : how to keep getting extraordinary things done in organizations / James M. Kouzes, Barry Z. Posner.". 2ND ED. San Francisco: Jossey-Bass Publishers, 1995. Text.