Grouws, D. A., & Mathematics, N. C. o. T. o. (1992). Handbook of research on mathematics teaching and learning: A project of the National Council of Teachers of Mathematics. New York : Simon & Schuster Macmillan.
Chicago (17e ed.) BronvermeldingGrouws, Douglas A., en National Council of Teachers of Mathematics. Handbook of Research on Mathematics Teaching and Learning: A Project of the National Council of Teachers of Mathematics. New York : Simon & Schuster Macmillan, 1992.
MLA (9e ed.) BronvermeldingGrouws, Douglas A., en National Council of Teachers of Mathematics. Handbook of Research on Mathematics Teaching and Learning: A Project of the National Council of Teachers of Mathematics. New York : Simon & Schuster Macmillan, 1992.
Let op: Deze citaties zijn niet altijd 100% accuraat.