Landsberg, M. (2000). The tools of leadership. HarperCollinsBusiness.
Cita Chicago (17th ed.)Landsberg, Max. The Tools of Leadership. London: HarperCollinsBusiness, 2000.
Cita MLA (8th ed.)Landsberg, Max. The Tools of Leadership. HarperCollinsBusiness, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.