APA (7th ed.) Citation

Hefferon, K., & Boniwell, I. (2011). Positive psychology: Theory, research and applications. McGraw-Hill.

Chicago Style (17th ed.) Citation

Hefferon, Kate, and Ilona Boniwell. Positive Psychology: Theory, Research and Applications. Berkshire, England: McGraw-Hill, 2011.

MLA (9th ed.) Citation

Hefferon, Kate, and Ilona Boniwell. Positive Psychology: Theory, Research and Applications. McGraw-Hill, 2011.