Friedman, T. L. 1., & Friedman, T. L. 1. (2006). The world is flat: A brief history of the Twenty-first century (1. Updated and expanded edition.). New York: Farrar, Straus and Giroux.
Citación estilo ChicagoFriedman, Thomas L. 1953-, y Thomas L. 1953- Friedman. The World Is Flat: A Brief History of the Twenty-first Century. 1. Updated and expanded edition. New York: Farrar, Straus and Giroux, 2006.
Cita MLAFriedman, Thomas L. 1953-, y Thomas L. 1953- Friedman. The World Is Flat: A Brief History of the Twenty-first Century. 1. Updated and expanded edition. New York: Farrar, Straus and Giroux, 2006.
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