National Council of Teachers of Mathematics, Fey, J. T., & Hirsch, C. R. (1992). Calculators in mathematics education. National Council of Teachers of Mathematics.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNational Council of Teachers of Mathematics, James Taylor Fey, এবং Christian R. Hirsch. Calculators in Mathematics Education. Reston, Va: National Council of Teachers of Mathematics, 1992.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিNational Council of Teachers of Mathematics, et al. Calculators in Mathematics Education. National Council of Teachers of Mathematics, 1992.
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