Friedman, T. L. (2009). Hot, flat, and crowded: Why we need a green revolution, and how it can renew America (Release 2,0 updated and expanded.). Picador.
Chicago Style aipamenaFriedman, Thomas L. Hot, Flat, and Crowded: Why We Need a Green Revolution, and How It Can Renew America. Release 2,0 updated and expanded. New York: Picador, 2009.
MLA aipamenaFriedman, Thomas L. Hot, Flat, and Crowded: Why We Need a Green Revolution, and How It Can Renew America. Release 2,0 updated and expanded. Picador, 2009.
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