Heddens, J. W. (2000). Today's mathematics (10th ed.). New York: John Wiley.
Trích dẫn kiểu ChicagoHeddens, James W. Today's Mathematics. 10th ed. New York: John Wiley, 2000.
MLA citiranjeHeddens, James W. Today's Mathematics. 10th ed. New York: John Wiley, 2000.
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