Gaya APA

Lipson, M, L., Lipschutz, S. (1992). 2000 solved problems in discrete mathematic . New York: McGraw-Hill, Inc.

Gaya MLA

Lipson, Marc, Lars., Lipschutz, Seymor. "2000 solved problems in discrete mathematic". New York: McGraw-Hill, Inc, 1992. Text.