Cooper, J. (2007). Cognitive dissonance: Fifty years of a classic theory. Sage.
Lua i Stíl Chicago (17ú heag.)Cooper, Joel. Cognitive Dissonance: Fifty Years of a Classic Theory. Los Angeles: Sage, 2007.
Lua MLA (9ú heag.)Cooper, Joel. Cognitive Dissonance: Fifty Years of a Classic Theory. Sage, 2007.
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