National Council of Teachers of Mathematics & Steffe, L. P. (1975). Research on the mathematical thinking of young children: Six empirical studies. National Council of Teachers of Mathematics.
Chicago Style (17th ed.) CitationNational Council of Teachers of Mathematics and Leslie P. Steffe. Research on the Mathematical Thinking of Young Children: Six Empirical Studies. Reston, VA: National Council of Teachers of Mathematics, 1975.
MLA (9th ed.) CitationNational Council of Teachers of Mathematics and Leslie P. Steffe. Research on the Mathematical Thinking of Young Children: Six Empirical Studies. National Council of Teachers of Mathematics, 1975.
Warning: These citations may not always be 100% accurate.