Gaya APA

Friedman, T, L. (2006). World is Flat, The : A Brief History of the Twenty-first Century, Updated and Expanded (1). : Farrar. Straus and Giroux.

Gaya MLA

Friedman, Thomas, L. "World is Flat, The : A Brief History of the Twenty-first Century, Updated and Expanded". 1 : Farrar. Straus and Giroux, 2006. Commentary.