APA (7th ed.) Citation

Fredrickson, B. (2009). Positivity. Oneworld Publications.

Chicago Style (17th ed.) Citation

Fredrickson, Barbara. Positivity. London: Oneworld Publications, 2009.

MLA (9th ed.) Citation

Fredrickson, Barbara. Positivity. Oneworld Publications, 2009.

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