Ong, A. D., & Dulmen, M. H. V. (2007). Oxford handbook of methods in positive psychology. Oxford University Press.
Chicago Style aipamenaOng, Anthony D., and Manfred H.M. Van Dulmen. Oxford Handbook of Methods in Positive Psychology. Oxford: Oxford University Press, 2007.
MLA aipamenaOng, Anthony D., and Manfred H.M. Van Dulmen. Oxford Handbook of Methods in Positive Psychology. Oxford University Press, 2007.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.