Lua APA (7ú heag.)

Wolpert, L. (2019). Principles of development (Sixth edition.). Oxford University Press.

Lua i Stíl Chicago (17ú heag.)

Wolpert, Lewis. Principles of Development. Sixth edition. Oxford, UK: Oxford University Press, 2019.

Lua MLA (9ú heag.)

Wolpert, Lewis. Principles of Development. Sixth edition. Oxford University Press, 2019.

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