APA (7th ed.) Citation

Krutetskii, V. A., Kilpatrick, J., & Wirszup, I. (1976). The psychology of mathematical abilities in schoolchildren. The University of Chicago.

Chicago Style (17th ed.) Citation

Krutetskii, Vadim Andreevich, Jeremy Kilpatrick, and Izaak Wirszup. The Psychology of Mathematical Abilities in Schoolchildren. Chicago: The University of Chicago, 1976.

MLA (9th ed.) Citation

Krutetskii, Vadim Andreevich, et al. The Psychology of Mathematical Abilities in Schoolchildren. The University of Chicago, 1976.