Παραπομπή APA

Levitt, S. D., & Dubner, S. J. (2005). Freakonomics: A roque economist explores the hidden side of everything. New York: HarperCollins.

Παραπομπή Chicago Style

Levitt, Steven D., and Stephen J. Dubner. Freakonomics: A Roque Economist Explores the Hidden Side of Everything. New York: HarperCollins, 2005.

Παραπομπή MLA

Levitt, Steven D., and Stephen J. Dubner. Freakonomics: A Roque Economist Explores the Hidden Side of Everything. New York: HarperCollins, 2005.

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