Gaya APA

Friedman, T, L. (2005). The world is flat: A brief history of the globalized world in the twenty-first century. . London: London Allen Lane & Penguin Books.

Gaya MLA

Friedman, Thomas, L.. "The world is flat: A brief history of the globalized world in the twenty-first century. ". London: London Allen Lane & Penguin Books, 2005. Buku.