LIPSCHUTZ SEYMOUR. (1992). DISCRETE MATHEMATICS: 2000 SOLVED PROBLEMS. MCGRAW-HILL.
Chicago-čujuhus (17. p.)LIPSCHUTZ SEYMOUR. DISCRETE MATHEMATICS: 2000 SOLVED PROBLEMS. NEW YORK: MCGRAW-HILL, 1992.
MLA-čujuhus (9. p.)LIPSCHUTZ SEYMOUR. DISCRETE MATHEMATICS: 2000 SOLVED PROBLEMS. MCGRAW-HILL, 1992.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.