The secret : what great leaders know and do.

MLA

Blanchard, Kenneth Harry, and Mark Miller. The Secret : What Great Leaders Know and Do. 2nd ed. San Francisco: Berrett-Koehler, 2009.

APA

Blanchard, K. Harry, & Miller, M. (2009). The secret : what great leaders know and do. 2nd ed. San Francisco: Berrett-Koehler.

Chicago

Blanchard, Kenneth Harry, and Mark Miller. The Secret: What Great Leaders Know and Do. 2nd ed. San Francisco: Berrett-Koehler, 2009.