APA Citation

Reys, B., Barger, R., & Kroll, D. L. (1991). Developing number sense in the middle grades. Reston Va.: National Council of Teachers of Mathematics.

Chicago Style Citation

Reys, Barbara, Rita Barger, and Diana Lambdin Kroll. Developing Number Sense in the Middle Grades. Reston Va.: National Council of Teachers of Mathematics, 1991.

MLA Citation

Reys, Barbara, Rita Barger, and Diana Lambdin Kroll. Developing Number Sense in the Middle Grades. Reston Va.: National Council of Teachers of Mathematics, 1991.

Warning: These citations may not always be 100% accurate.