Ekman, P. Expression and the nature of emotion: Paul Ekman. Approaches to emotion.(c 1984).
Čikaški stil citiranja (17. izdanje)Ekman, Paul. "Expression and the Nature of Emotion: Paul Ekman." Approaches to Emotion.(c 1984) .
MLA način citiranja (8. izdanje)Ekman, Paul. "Expression and the Nature of Emotion: Paul Ekman." Approaches to Emotion.(c 1984), .
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