APA (7th ed.) Citation

Duff McDonald. (2013). The firm: The story of McKinsey and its secret influence on American business. Simon & Schuster.

Chicago Style (17th ed.) Citation

Duff McDonald. The Firm: The Story of McKinsey and Its Secret Influence on American Business. New York: Simon & Schuster, 2013.

MLA (9th ed.) Citation

Duff McDonald. The Firm: The Story of McKinsey and Its Secret Influence on American Business. Simon & Schuster, 2013.

Warning: These citations may not always be 100% accurate.