APA (7th ed.) Citation

Blanchard, K. H., & Miller, M. (2009). The secret: What great leaders know and do (2nd ed.). Berrett-Koehler publishers.

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

Warning: These citations may not always be 100% accurate.