Begle, E. G. (1979). Critical variables in mathematics education: Findings from a survey of the empirical literature. Mathematical Association of America : National Council of Teachers of Mathematics.
Citação do estilo Chicago (17ª ed.)Begle, Edward Griffith. Critical Variables in Mathematics Education: Findings from a Survey of the Empirical Literature. Washington, D.C: Mathematical Association of America : National Council of Teachers of Mathematics, 1979.
Citação MLA (9ª ed.)Begle, Edward Griffith. Critical Variables in Mathematics Education: Findings from a Survey of the Empirical Literature. Mathematical Association of America : National Council of Teachers of Mathematics, 1979.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.