National Council of Teachers of Mathematics. (2020). Mathematics News Letter. Mathematics News Letter.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNational Council of Teachers of Mathematics. Mathematics News Letter. Baton Rouge, La: Mathematics News Letter, 2020.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNational Council of Teachers of Mathematics. Mathematics News Letter. Mathematics News Letter, 2020.
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