Referensi

Bóna, M. (2007). Introduction to Enumerative Combinatorics. McGraw-Hill Education.

Budhi, W. S. (2003). Langkah Awal Menuju ke Olimpiade Matematika. Jakarta, Indonesia: Ricardo.

Lipschutz, S., & Lipson, M. (n.d.). Schaum's Outlines - Discrete Mathematics (3rd ed.). McGraw-Hill.

Liu, C. L. (1985). Element of Discrete Mathematics.

Rosen, K. H., & Krithivasan, K. (2013). Discrete Mathematics and Its Applications (Global ed.). New York: McGraw-Hill.

Russell, D. W., Williamson, R. K., & Ellery, P. V. (1985). Probability & Counting. East Perth, Australia: Bookland.