Willingham, R. (1997). The people principle: A revolutionary redefinition of leadership. St. Martins press.
Style de citation Chicago (17e éd.)Willingham, Ron. The People Principle: A Revolutionary Redefinition of Leadership. New York: St. Martins press, 1997.
Style de citation MLA (9e éd.)Willingham, Ron. The People Principle: A Revolutionary Redefinition of Leadership. St. Martins press, 1997.
Attention : ces citations peuvent ne pas être correctes à 100%.