National Council of Teachers of Mathematics. (1953). Guidance pamphlet in mathematics for high school students (Rev.). s.n.
Citação norma ChicagoNational Council of Teachers of Mathematics. Guidance Pamphlet in Mathematics for High School Students. Rev. Washington: s.n, 1953.
Citação norma MLANational Council of Teachers of Mathematics. Guidance Pamphlet in Mathematics for High School Students. Rev. s.n, 1953.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.