Landsberg, M. (2000). The tools of leadership. HarperCollinsBusiness.
Lua i Stíl Chicago (17ú heag.)Landsberg, Max. The Tools of Leadership. London: HarperCollinsBusiness, 2000.
Lua MLA (8ú heag.)Landsberg, Max. The Tools of Leadership. HarperCollinsBusiness, 2000.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.