Rosskopf, M. F., & Taback, S. (1971). Piagetian cognitve development research and mathematical education. National Council of Teachers of Mathematics.
Citace podle Chicago (17th ed.)Rosskopf, Myron F., a Stanley Taback. Piagetian Cognitve Development Research and Mathematical Education. Washington: National Council of Teachers of Mathematics, 1971.
Citace podle MLA (9th ed.)Rosskopf, Myron F., a Stanley Taback. Piagetian Cognitve Development Research and Mathematical Education. National Council of Teachers of Mathematics, 1971.
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