Ginsburg, H., & Opper, S. (1969). Piaget's theory of intellectual development: An introduction. New Jersey: Prentice Hall.
Chicago Style CitationGinsburg, Herbert, and Sylvia Opper. Piaget's Theory of Intellectual Development: An Introduction. New Jersey: Prentice Hall, 1969.
MLA CitationGinsburg, Herbert, and Sylvia Opper. Piaget's Theory of Intellectual Development: An Introduction. New Jersey: Prentice Hall, 1969.
Warning: These citations may not always be 100% accurate.