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.
Lua i Stíl Chicago (17ú heag.)School Mathematics Study Group, Jeremy Kilpartick, agus Izaak Wirzup. Soviet Studies in the Psychology of Learning and Teaching Mathematics: Jeremy Kilpartick and Izaak Wirzup. Stanford, CA: School Mathematics Study Group.
Lua MLA (9ú heag.)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.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.