Willingham, R. (1997). The people principle: A revolutionary redefinition of leadership. St. Martins press.
Chicago Style (17th ed.) CitationWillingham, Ron. The People Principle: A Revolutionary Redefinition of Leadership. New York: St. Martins press, 1997.
MLA (9th ed.) CitationWillingham, Ron. The People Principle: A Revolutionary Redefinition of Leadership. St. Martins press, 1997.
Warning: These citations may not always be 100% accurate.