APA-viite (7. p.)

Friedman, T. (2005). The world is flat: A brief history of the twenty-first century. Farrar, Straus and Giroux.

Chicago-viite (17. p.)

Friedman, Thomas. The World Is Flat: A Brief History of the Twenty-first Century. New York: Farrar, Straus and Giroux, 2005.

MLA-viite (9. p.)

Friedman, Thomas. The World Is Flat: A Brief History of the Twenty-first Century. Farrar, Straus and Giroux, 2005.