APA (7th ed.) Citation

Piaget, J., Gabain, M., & Gabain, R. (1960). The language and thought of the child. Routledge & Kegan Paul.

Chicago Style (17th ed.) Citation

Piaget, Jean, Marjorie Gabain, and Ruth Gabain. The Language and Thought of the Child. London: Routledge & Kegan Paul, 1960.

MLA (8th ed.) Citation

Piaget, Jean, et al. The Language and Thought of the Child. Routledge & Kegan Paul, 1960.