Cita APA (7th ed.)
De Pree, M. (1989). Leadership is an art. Doubleday.
Cita Chicago (17th ed.)
De Pree, Max. Leadership Is an Art. New York: Doubleday, 1989.
Cita MLA (9th ed.)
De Pree, Max. Leadership Is an Art. Doubleday, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.