National Council of Teachers of Mathematics. Commission on Standards for School Mathematics. (1989). Curriculum and evaluation standards for school mathematics. The Council.
Citação do estilo Chicago (17ª ed.)National Council of Teachers of Mathematics. Commission on Standards for School Mathematics. Curriculum and Evaluation Standards for School Mathematics. Reston, VA: The Council, 1989.
Citação MLA (9ª ed.)National Council of Teachers of Mathematics. Commission on Standards for School Mathematics. Curriculum and Evaluation Standards for School Mathematics. The Council, 1989.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.