APA (7th ed.) Citation

Friedman, T. L. (2009). Hot, Flat, and Crowded: Why we need a Green Revolution - and how it can renew America. Penguin.

Chicago Style (17th ed.) Citation

Friedman, Thomas L. Hot, Flat, and Crowded: Why We Need a Green Revolution - and How It Can Renew America. New York: Penguin, 2009.

MLA (8th ed.) Citation

Friedman, Thomas L. Hot, Flat, and Crowded: Why We Need a Green Revolution - and How It Can Renew America. Penguin, 2009.