National Council of Teachers of Mathematics. (1954). The Arithmetic teacher. National Council of Teachers of Mathematics.
Citação do estilo Chicago (17ª ed.)National Council of Teachers of Mathematics. The Arithmetic Teacher. Washington, D.C: National Council of Teachers of Mathematics, 1954.
Citação MLA (9ª ed.)National Council of Teachers of Mathematics. The Arithmetic Teacher. National Council of Teachers of Mathematics, 1954.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.