Cita APA (7a ed.)

Plutchik, R. (1994). The psychology and biology of emotion. Harper Collins.

Cita Chicago Style (17a ed.)

Plutchik, Robert. The Psychology and Biology of Emotion. New York: Harper Collins, 1994.

Cita MLA (9a ed.)

Plutchik, Robert. The Psychology and Biology of Emotion. Harper Collins, 1994.