Kahan,Steven. (1978). Have some sums to solve: The complete alphametics books. Universities press.
Chicago Edition CitationKahan,Steven. Have Some Sums to Solve: The Complete Alphametics Books. Hyderabad: Universities press, 1978.
MLA Edition CitationKahan,Steven. Have Some Sums to Solve: The Complete Alphametics Books. Universities press, 1978.
Warning: These citations may not always be 100% accurate.