Cita APA

Fredrickson, B. L. (2004). The broaden-and-build theory of positive emotions.

Chicago Style Citation

Fredrickson, Barbara L. The Broaden-and-build Theory of Positive Emotions. 2004.

Cita MLA

Fredrickson, Barbara L. The Broaden-and-build Theory of Positive Emotions. 2004.

Atenció: Aquestes cites poden no estar 100% correctes.