Style de citation APA (7e éd.)

Ginsburg, H., & Opper, S. (1979). Piaget's theory of intellectual development (2nd ed.). Prentice-Hall.

Style de citation Chicago (17e éd.)

Ginsburg, Herbert, et Sylvia Opper. Piaget's Theory of Intellectual Development. 2nd ed. Englewood Cliffs, N.J: Prentice-Hall, 1979.

Style de citation MLA (9e éd.)

Ginsburg, Herbert, et Sylvia Opper. Piaget's Theory of Intellectual Development. 2nd ed. Prentice-Hall, 1979.