Friedman. (2006). The world is flat: The globalized world in the twenty-first century. Penguin.
Chicago Style (17th ed.) CitationFriedman. The World Is Flat: The Globalized World in the Twenty-first Century. London: Penguin, 2006.
MLA (8th ed.) CitationFriedman. The World Is Flat: The Globalized World in the Twenty-first Century. Penguin, 2006.
Warning: These citations may not always be 100% accurate.