Dyfyniad APA

Wolpert, L., Tickle, C., Arias, A. M., & Lawrence, P. (2015). Principles of development (Fifth edition.). Oxford University Press.

Dyfyniad Arddull Chicago

Wolpert, Lewis, Cheryll Tickle, Alfonso Martinez Arias, and Peter Lawrence. Principles of Development. Fifth edition. Oxford, United Kingdom: Oxford University Press, 2015.

Dyfyniad MLA

Wolpert, Lewis, et al. Principles of Development. Fifth edition. Oxford University Press, 2015.

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