EBBY, C. B. H. (2021). A focus on addition and subtraction: : bringing mathematics education research to the classroom. Routledge.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रEBBY, Caroline B. Hulbert. A Focus on Addition and Subtraction: : Bringing Mathematics Education Research to the Classroom. Routledge, 2021.
एमएलए (9वां संस्करण) प्रशस्ति पत्रEBBY, Caroline B. Hulbert. A Focus on Addition and Subtraction: : Bringing Mathematics Education Research to the Classroom. Routledge, 2021.
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