Kahan,Steven. (1978). Have some sums to solve: The complete alphametics books. Universities press.
Chicago ZitierstilKahan,Steven. Have Some Sums to Solve: The Complete Alphametics Books. Hyderabad: Universities press, 1978.
MLA ZitierstilKahan,Steven. Have Some Sums to Solve: The Complete Alphametics Books. Universities press, 1978.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.