Heddens, J. W., & Speer, W. R. (1988). Today's Mathematics: Concepts and Methods in Elementary School Mathematics (6.Edition.). Macmillan Publishing Company.
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Chicago Style (17th ed.) Citation
Heddens, James W., and William R. Speer. Today's Mathematics: Concepts and Methods in Elementary School Mathematics. 6.Edition. New York: Macmillan Publishing Company, 1988.
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MLA (9th ed.) Citation
Heddens, James W., and William R. Speer. Today's Mathematics: Concepts and Methods in Elementary School Mathematics. 6.Edition. Macmillan Publishing Company, 1988.
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Warning: These citations may not always be 100% accurate.