Lipschutz, S., & Lipson, M. (1999). Schaum's outline of discrete mathematics (2nd edition.). Schaum ; Tata McGraw-Hill.

Lipschutz, Seymour, and Marc Lipson. Schaum's Outline of Discrete Mathematics. 2nd edition. New York : London ; New Delhi: Schaum ; Tata McGraw-Hill, 1999.

Lipschutz, Seymour, and Marc Lipson. Schaum's Outline of Discrete Mathematics. 2nd edition. Schaum ; Tata McGraw-Hill, 1999.