Fredrickson, B. L. (2004). The broaden-and-build theory of positive emotions.
Chicago Style CitationFredrickson, Barbara L. The Broaden-and-build Theory of Positive Emotions. 2004.
Cita MLAFredrickson, Barbara L. The Broaden-and-build Theory of Positive Emotions. 2004.
Atenció: Aquestes cites poden no estar 100% correctes.