APA

Friedman (Thomas L), . (2006). The World is Flat: The Globalized World in the Twenty-First Century. : .

Chicago

Friedman (Thomas L), . 2006. The World is Flat: The Globalized World in the Twenty-First Century. : .

Harvard

Friedman (Thomas L), . (2006). The World is Flat: The Globalized World in the Twenty-First Century. : .

MLA

Friedman (Thomas L), . The World is Flat: The Globalized World in the Twenty-First Century. : . 2006.