Dyfyniad APA

Willingham, R. (1997). The people principle: A revolutionary redefinition of leadership. St. Martins press.

Dyfyniad Arddull Chicago

Willingham, Ron. The People Principle: A Revolutionary Redefinition of Leadership. New York: St. Martins press, 1997.

Dyfyniad MLA

Willingham, Ron. The People Principle: A Revolutionary Redefinition of Leadership. St. Martins press, 1997.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.