Riedesel, C. A. (1967). Guiding discovery in elementary school mathematics. Appleton-Century-Crofts.
Citace podle Chicago (17th ed.)Riedesel, C. Alan. Guiding Discovery in Elementary School Mathematics. New York: Appleton-Century-Crofts, 1967.
Citace podle MLA (8th ed.)Riedesel, C. Alan. Guiding Discovery in Elementary School Mathematics. Appleton-Century-Crofts, 1967.
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