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.
芝加哥风格引文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.
MLA引文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.
警告：这些引文格式不一定是100％准确.