Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.