McDonald Duff. (2013). Firm: The Story of Mckinsey. Simon & Schuster.
Lua i Stíl Chicago (17ú heag.)McDonald Duff. Firm: The Story of Mckinsey. New York: Simon & Schuster, 2013.
Lua MLA (9ú heag.)McDonald Duff. Firm: The Story of Mckinsey. Simon & Schuster, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.