Gw mau tau kecintaan (love) dari Robert Plutchik

Plutchik, Robert (1980), Emotion: Theory, research, and experience: Vol. 1. Theories of emotion, 1, New York: Academic

Plutchik, Robert (2002), Emotions and Life: Perspectives from Psychology, Biology, and Evolution, Washington, DC: American Psychological Association

Plutchik, Robert; R. Conte., Hope (1997), Circumplex Models of Personality and Emotions, Washington, DC: American Psychological Association