APA-referens (7:e uppl.)

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

Chicago-referens (17:e uppl.)

Liu, C. L. Introduction to Combinatorial Mathematics. New York: McGraw-Hill Book Co., Inc, 1968.

MLA-referens (9:e uppl.)

Liu, C. L. Introduction to Combinatorial Mathematics. McGraw-Hill Book Co., Inc, 1968.