APA (7th ed.) Citation

KOUZES & Posner. (2007). The leadership challenge. John Wiley & Sons.

Chicago Style (17th ed.) Citation

KOUZES and Posner. The Leadership Challenge. New Jersey: John Wiley & Sons, 2007.

MLA (9th ed.) Citation

KOUZES and Posner. The Leadership Challenge. John Wiley & Sons, 2007.

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