MATHEMATICS, N. C. O. T. O. (1963). Enrichment Mathematics for the Grades. National Council of Teachers of Mathematics.
Chicago Style (17. basım) AtıfMATHEMATICS, NATIONAL COUNCIL OF TEACHERS OF. Enrichment Mathematics for the Grades. National Council of Teachers of Mathematics, 1963.
MLA (8th ed.) AtıfMATHEMATICS, NATIONAL COUNCIL OF TEACHERS OF. Enrichment Mathematics for the Grades. National Council of Teachers of Mathematics, 1963.
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