National Council of Teachers of Mathematics, Suydam, M. N., & Reys, R. E. (1978). Developing computational skills. NCTM.
Цитирование в стиле Чикаго (17-е изд.)National Council of Teachers of Mathematics, Marilyn N. Suydam, и Robert E. Reys. Developing Computational Skills. Reston, VA: NCTM, 1978.
Цитирование MLA (9-е изд.)National Council of Teachers of Mathematics, et al. Developing Computational Skills. NCTM, 1978.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.