Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

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