APA (7th ed.) Zitazioa
ebrary, Inc, Snyder, C. R., & Lopez, S. J. (2005). Handbook of positive psychology. Oxford University Press.
Chicago Style (17th ed.) Zitazioa
ebrary, Inc, C. R. Snyder, eta Shane J. Lopez. Handbook of Positive Psychology. New York: Oxford University Press, 2005.
MLA (9th ed.) Zitazioa
ebrary, Inc, et al. Handbook of Positive Psychology. Oxford University Press, 2005.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.