Friedman, T. L. (2006). The World Is Flat: Sejarah ringkas Abad ke 21. Saint Joseph's University.
Chicago Style (17th ed.) CitationFriedman, Thomas L. The World Is Flat: Sejarah Ringkas Abad Ke 21. Saint Joseph's University, 2006.
MLA (8th ed.) CitationFriedman, Thomas L. The World Is Flat: Sejarah Ringkas Abad Ke 21. Saint Joseph's University, 2006.
Warning: These citations may not always be 100% accurate.