APA (7th ed.) Citation

Fredrickson, B. (2011). Positivity: Groundbreaking research to release your inner optimist and thrive. Oneworld.

Chicago Style (17th ed.) Citation

Fredrickson, Barbara. Positivity: Groundbreaking Research to Release Your Inner Optimist and Thrive. Richmond: Oneworld, 2011.

MLA (9th ed.) Citation

Fredrickson, Barbara. Positivity: Groundbreaking Research to Release Your Inner Optimist and Thrive. Oneworld, 2011.

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