MATHEMATICS, N. C. O. T. O. (1963). Enrichment Mathematics for the Grades. National Council of Teachers of Mathematics.
Chicago-стиль цитированияMATHEMATICS, NATIONAL COUNCIL OF TEACHERS OF. Enrichment Mathematics for the Grades. National Council of Teachers of Mathematics, 1963.
MLA-цитированиеMATHEMATICS, NATIONAL COUNCIL OF TEACHERS OF. Enrichment Mathematics for the Grades. National Council of Teachers of Mathematics, 1963.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.