Παραπομπή APA

Ong, A. D., & Dulmen, M. H. V. (2007). Oxford handbook of methods in positive psychology. Oxford University Press.

Παραπομπή Chicago Style

Ong, Anthony D., και Manfred H.M. Van Dulmen. Oxford Handbook of Methods in Positive Psychology. Oxford: Oxford University Press, 2007.

Παραπομπή MLA

Ong, Anthony D., και Manfred H.M. Van Dulmen. Oxford Handbook of Methods in Positive Psychology. Oxford University Press, 2007.