Cita APA

Kahan, S. (1998). Have some sums to solve: The complete alphametics book. university press.

Chicago Edition Citation

Kahan, Steven. Have Some Sums to Solve: The Complete Alphametics Book. university press, 1998.

Cita MLA

Kahan, Steven. Have Some Sums to Solve: The Complete Alphametics Book. university press, 1998.

Atenció: Aquestes cites poden no estar 100% correctes.