APA Style

Levitt, S, D., Dubner, S, J. (2009). Freakonomics : a rogue economist explores the hidden side of everything . New York: HarperCollinsPublisher.

MLA Style

Levitt, Steven, D.., Dubner, Stephen, J.. "Freakonomics : a rogue economist explores the hidden side of everything". New York: HarperCollinsPublisher, 2009. .