National Council of Teachers of Mathematics. (1969). More topics in mathematics for elementary school teachers. [s.n.].
Цитирование в стиле Чикаго (17-е изд.)National Council of Teachers of Mathematics. More Topics in Mathematics for Elementary School Teachers. Washington: [s.n.], 1969.
Цитирование MLA (9-е изд.)National Council of Teachers of Mathematics. More Topics in Mathematics for Elementary School Teachers. [s.n.], 1969.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.