Citazione Stile APA (7a Edizione)

Liu, C. (1985). Elements of Discrete Mathematics (2nd.).

Citazione stile Chigago Style (17a edizione)

Liu, C.L. Elements of Discrete Mathematics. 2nd. McGraw Hill Book Company, 1985.

Citatione MLA (9a ed.)

Liu, C.L. Elements of Discrete Mathematics. 2nd. 1985.