APA (7th ed.) Citation

Piaget, J. (1950). The psychology of intelligence / by J. Piaget. Routledge and Kegan Paul.

Chicago Style (17th ed.) Citation

Piaget, Jean. The Psychology of Intelligence / by J. Piaget. Routledge and Kegan Paul, 1950.

MLA (9th ed.) Citation

Piaget, Jean. The Psychology of Intelligence / by J. Piaget. Routledge and Kegan Paul, 1950.

Warning: These citations may not always be 100% accurate.