APA (7th ed.) Citation

Steffe, L. P. (1975). Research on mathematical thinking of young children: Six empirical studies. National Council of Teachers of Mathematics.

Chicago Style (17th ed.) Citation

Steffe, Leslie P. Research on Mathematical Thinking of Young Children: Six Empirical Studies. Reston, Virginia: National Council of Teachers of Mathematics, 1975.

MLA (9th ed.) Citation

Steffe, Leslie P. Research on Mathematical Thinking of Young Children: Six Empirical Studies. National Council of Teachers of Mathematics, 1975.