Friedman, T. L. (2006). The world is flat: The globalized world in the twenty-first century (Updated and expanded.). Penguin Books.
Chicagoスタイル(17版)引用形式Friedman, Thomas L. The World Is Flat: The Globalized World in the Twenty-first Century. Updated and expanded. London: Penguin Books, 2006.
MLA(9版)引用形式Friedman, Thomas L. The World Is Flat: The Globalized World in the Twenty-first Century. Updated and expanded. Penguin Books, 2006.
警告: この引用は必ずしも正確ではありません.