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