Cita APA

Friedman, T. L. (2008). Hot, flat and crowded: Why the world needs a green revolution and how can we renew. Penguin Books.

Chicago Edition Citation

Friedman, Thomas L. Hot, Flat and Crowded: Why the World Needs a Green Revolution and How Can We Renew. New York: Penguin Books, 2008.

Cita MLA

Friedman, Thomas L. Hot, Flat and Crowded: Why the World Needs a Green Revolution and How Can We Renew. Penguin Books, 2008.

Atenció: Aquestes cites poden no estar 100% correctes.