Ginsburg, H., & Opper, S. (1969). Piaget's theory of intellectual development: An introduction. Prentice Hall.
Chicagoスタイル(17版)引用形式Ginsburg, Herbert, , Sylvia Opper. Piaget's Theory of Intellectual Development: An Introduction. New Jersey: Prentice Hall, 1969.
MLA(9版)引用形式Ginsburg, Herbert, , Sylvia Opper. Piaget's Theory of Intellectual Development: An Introduction. Prentice Hall, 1969.
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