APA Citation

Leushina, A. M., & Steffe, L. P. (1991). The development of elementary mathematical concepts in preschool children. Reston, Va.: National Council of Teachers of Mathematics.

Chicago Style Citation

Leushina, A. M., and Leslie P. Steffe. The Development of Elementary Mathematical Concepts in Preschool Children. Reston, Va.: National Council of Teachers of Mathematics, 1991.

MLA Citation

Leushina, A. M., and Leslie P. Steffe. The Development of Elementary Mathematical Concepts in Preschool Children. Reston, Va.: National Council of Teachers of Mathematics, 1991.

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