APA (7th ed.) Citation

Levitt, S. D. (2009). Freakonomics. Harper Collins.

Chicago Style (17th ed.) Citation

Levitt, Steven D. Freakonomics. Harper Collins, 2009.

MLA (9th ed.) Citation

Levitt, Steven D. Freakonomics. Harper Collins, 2009.

Warning: These citations may not always be 100% accurate.