Lipschutz, S., & Lipson, M. (1992). 2000 solved problems in discrete mathematics (International ed.). McGraw-Hill.
Cita Chicago (17th ed.)Lipschutz, Seymour, i Marc Lipson. 2000 Solved Problems in Discrete Mathematics. International ed. New York: McGraw-Hill, 1992.
Cita MLA (9th ed.)Lipschutz, Seymour, i Marc Lipson. 2000 Solved Problems in Discrete Mathematics. International ed. McGraw-Hill, 1992.
Atenció: Aquestes cites poden no estar 100% correctes.