APA (7th ed.) Citation

Snyder, C. R., & Lopez, S. J. (2002). Handbook of positive psychology. Oxford University Press.

Chicago Style (17th ed.) Citation

Snyder, C. R., and Shane J. Lopez. Handbook of Positive Psychology. Oxford [England] ; New York: Oxford University Press, 2002.

MLA (8th ed.) Citation

Snyder, C. R., and Shane J. Lopez. Handbook of Positive Psychology. Oxford University Press, 2002.