Kahan,Steven. (1978). Have some sums to solve: The complete alphametics books. Universities press.
シカゴスタイル引用形Kahan,Steven. Have Some Sums to Solve: The Complete Alphametics Books. Hyderabad: Universities press, 1978.
MLA引用形式Kahan,Steven. Have Some Sums to Solve: The Complete Alphametics Books. Universities press, 1978.
警告: この引用は必ずしも正確ではありません.