Smith, S. S. (2006). Early childhood mathematics. London / New York: Pearson Education.
Trích dẫn kiểu ChicagoSmith, Susan Sperry. Early Childhood Mathematics. London / New York: Pearson Education, 2006.
MLA CitationSmith, Susan Sperry. Early Childhood Mathematics. London / New York: Pearson Education, 2006.
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