APA (7th ed.) Citation

Willingham, R. (1997). The people principle: A revolutionary redefinition of leadership. ST martin's Press.

Chicago Style (17th ed.) Citation

Willingham, Ron. The People Principle: A Revolutionary Redefinition of Leadership. New York: ST martin's Press, 1997.

MLA (8th ed.) Citation

Willingham, Ron. The People Principle: A Revolutionary Redefinition of Leadership. ST martin's Press, 1997.

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