APA (7th ed.) Citation

Cooper, J. (2007). Cognitive dissonance: Fifty years of a classic theory. Sage.

Chicago Style (17th ed.) Citation

Cooper, Joel. Cognitive Dissonance: Fifty Years of a Classic Theory. Los Angeles: Sage, 2007.

MLA (9th ed.) Citation

Cooper, Joel. Cognitive Dissonance: Fifty Years of a Classic Theory. Sage, 2007.