Allendoerfer, C. B. (1971). Principles of arithmetic and geometry for elementary school teachers. Macmillan.
Citace podle Chicago (17th ed.)Allendoerfer, Carl B. Principles of Arithmetic and Geometry for Elementary School Teachers. New York: Macmillan, 1971.
Citace podle MLA (9th ed.)Allendoerfer, Carl B. Principles of Arithmetic and Geometry for Elementary School Teachers. Macmillan, 1971.
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