Emotions and life perspectives from psychology, biology, and evolution per Plutchik, Robert

The psychology and biology of emotion per Plutchik, Robert

Foundations of experimental research per Plutchik, Robert

Emotion a psychoevolutionary synthesis per Plutchik, Robert

Emotion per Plutchik, Robert

Programmed learning aid for emotion per Plutchik, Robert

Foundations of experimental research per Plutchik, Robert

Foundations of experimental research per Plutchik, Robert

The emotions facts, theories, and a new model per Plutchik, Robert