APA (7th ed.) Citation

Lopez, S. J. (2009). The encyclopedia of positive psychology. Wiley-Blackwell Pub..

Chicago Style (17th ed.) Citation

Lopez, Shane J. The Encyclopedia of Positive Psychology. Chichester, U.K. ; Malden, MA: Wiley-Blackwell Pub., 2009.

MLA (9th ed.) Citation

Lopez, Shane J. The Encyclopedia of Positive Psychology. Wiley-Blackwell Pub., 2009.