Gaya APA

Levitt, S, D., Dubner, S, J. (2009). Super Freakonomics Global Cooling, Patriotic Prostitutes and Why Suicide Bombers Should Buy Life Insurance . New York: HarperCollins Publishers.

Gaya MLA

Levitt, Steven, D., Dubner, Stephen, J. "Super Freakonomics Global Cooling, Patriotic Prostitutes and Why Suicide Bombers Should Buy Life Insurance". New York: HarperCollins Publishers, 2009. Art Original.