APA (7th ed.) Citation

Piaget, J. (1959). The language and thought of the child. (3rd rev. ed.). Routledge.

Chicago Style (17th ed.) Citation

Piaget, Jean. The Language and Thought of the Child. 3rd rev. ed. New York: Routledge, 1959.

MLA (9th ed.) Citation

Piaget, Jean. The Language and Thought of the Child. 3rd rev. ed. Routledge, 1959.