(1992). Handbook of research on mathematics teaching and learning: A project of National Council of Teachers of mathematics. Macmillan.
Chicago-Zitierstil (17. Ausg.)Handbook of Research on Mathematics Teaching and Learning: A Project of National Council of Teachers of Mathematics. N.Y: Macmillan, 1992.
MLA-Zitierstil (9. Ausg.)Handbook of Research on Mathematics Teaching and Learning: A Project of National Council of Teachers of Mathematics. Macmillan, 1992.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.