Friedman, T. L. (2007). The world is flat: A brief history of the twenty-first century (Further updated and expanded.). Picador.
Chicagoスタイル(17版)引用形式Friedman, Thomas L. The World Is Flat: A Brief History of the Twenty-first Century. Further updated and expanded. New York: Picador, 2007.
MLA(8版)引用形式Friedman, Thomas L. The World Is Flat: A Brief History of the Twenty-first Century. Further updated and expanded. Picador, 2007.
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