APA (7th ed.) Citation

PIAGET, J., INHELDER, B., & WEAVER, h. (1977). The Psychology of the Child. Routledge & kegan.

Chicago Style (17th ed.) Citation

PIAGET, Jean, Bärbel INHELDER, and hELEN WEAVER. The Psychology of the Child. London: Routledge & kegan, 1977.

MLA (9th ed.) Citation

PIAGET, Jean, et al. The Psychology of the Child. Routledge & kegan, 1977.