APA (7th ed.) Citation

Piaget, J., Gabain, M., & Claparede, E. (1955). The language and thought of the child. Meridian Books.

Chicago Style (17th ed.) Citation

Piaget, Jean, Marjorie Gabain, and E. Claparede. The Language and Thought of the Child. New York: Meridian Books, 1955.

MLA (9th ed.) Citation

Piaget, Jean, et al. The Language and Thought of the Child. Meridian Books, 1955.