APA (7th ed.) Citation

Piaget, J. (1955). The language and thought of the child. The World Publishing Co.

Chicago Style (17th ed.) Citation

Piaget, Jean. The Language and Thought of the Child. Cleveland: The World Publishing Co, 1955.

MLA (9th ed.) Citation

Piaget, Jean. The Language and Thought of the Child. The World Publishing Co, 1955.