Cita APA (7a ed.)
Friedman, T. L. The World is Flat: A Brief History of the Twenty-First Century. Farrar, Straus and Giroux.
Cita estilo Chicago (17a ed.)
Friedman, Thomas L. The World Is Flat: A Brief History of the Twenty-First Century. Nueva York, EUA: Farrar, Straus and Giroux.
Cita MLA (9a ed.)
Friedman, Thomas L. The World Is Flat: A Brief History of the Twenty-First Century. Farrar, Straus and Giroux.
Precaución: Estas citas no son 100% exactas.