Dyfyniad APA

Piaget, J., Inhelder, B., & Weaver, H. (1969). The psychology of the child. Basic Books.

Dyfyniad Arddull Chicago

Piaget, Jean, Barbel Inhelder, and Helen Weaver. The Psychology of the Child. New York: Basic Books, 1969.

Dyfyniad MLA

Piaget, Jean, et al. The Psychology of the Child. Basic Books, 1969.

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