APA (7th ed.) Citation

Liu, C. L. (1968). Introduction to combinatorial mathematics. McGraw-Hill.

Chicago Style (17th ed.) Citation

Liu, Chung Laung. Introduction to Combinatorial Mathematics. Nueva York: McGraw-Hill, 1968.

MLA (9th ed.) Citation

Liu, Chung Laung. Introduction to Combinatorial Mathematics. McGraw-Hill, 1968.