Mathematical Association. Mathematics in school. Longman Group on behalf of the Mathematical Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMathematical Association. Mathematics in School. London [England]: Longman Group on behalf of the Mathematical Association.
एमएलए (9वां संस्करण) प्रशस्ति पत्रMathematical Association. Mathematics in School. Longman Group on behalf of the Mathematical Association.
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