APA (7th ed.) Citation

School Mathematics Study Group, Kilpartick, J., & Wirzup, I. Soviet studies in the psychology of learning and teaching mathematics: Jeremy Kilpartick and Izaak Wirzup. School Mathematics Study Group.

Chicago Style (17th ed.) Citation

School Mathematics Study Group, Jeremy Kilpartick, and Izaak Wirzup. Soviet Studies in the Psychology of Learning and Teaching Mathematics: Jeremy Kilpartick and Izaak Wirzup. Stanford, CA: School Mathematics Study Group.

MLA (9th ed.) Citation

School Mathematics Study Group, et al. Soviet Studies in the Psychology of Learning and Teaching Mathematics: Jeremy Kilpartick and Izaak Wirzup. School Mathematics Study Group.