Mcdonald Duff. (2013). firm: The story of McKinsey and its secret influence on American business. Simon & Schuster.
Lua i Stíl Chicago (17ú heag.)Mcdonald Duff. Firm: The Story of McKinsey and Its Secret Influence on American Business. New York: Simon & Schuster, 2013.
Lua MLA (9ú heag.)Mcdonald Duff. Firm: The Story of McKinsey and Its Secret Influence on American Business. Simon & Schuster, 2013.
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