APA (7th ed.) Citation

Fredrickson, B. (2009). Positivity (1. ed.). Crown Publ.

Chicago Style (17th ed.) Citation

Fredrickson, Barbara. Positivity. 1. ed. New York: Crown Publ, 2009.

MLA (9th ed.) Citation

Fredrickson, Barbara. Positivity. 1. ed. Crown Publ, 2009.

Warning: These citations may not always be 100% accurate.