Giuliani, R. (2002). Leadership. Hyperion.
Lua i Stíl Chicago (17ú heag.)Giuliani, Rudolph. Leadership. New york: Hyperion, 2002.
Lua MLA (9ú heag.)Giuliani, Rudolph. Leadership. Hyperion, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.