APA (7th ed.) Citation

Isaacs, N. (1972). A brief introduction to Piaget. Agathon Press.

Chicago Style (17th ed.) Citation

Isaacs, Nathan. A Brief Introduction to Piaget. New York: Agathon Press, 1972.

MLA (9th ed.) Citation

Isaacs, Nathan. A Brief Introduction to Piaget. Agathon Press, 1972.