APA (7th ed.) Citation

Ariely, D. (2009). Predictably irrational: The hidden forces that shape our decisions (Rev. and expanded ed.). Harper.

Chicago Style (17th ed.) Citation

Ariely, Dan. Predictably Irrational: The Hidden Forces That Shape Our Decisions. Rev. and expanded ed. New York, NY: Harper, 2009.

MLA (9th ed.) Citation

Ariely, Dan. Predictably Irrational: The Hidden Forces That Shape Our Decisions. Rev. and expanded ed. Harper, 2009.