Cita APA (7a ed.)

Liu, C. L. (1977). Elements of discrete mathematics. McGraw-Hill.

Cita Chicago Style (17a ed.)

Liu, C. L. Elements of Discrete Mathematics. New York [etc.]: McGraw-Hill, 1977.

Cita MLA (9a ed.)

Liu, C. L. Elements of Discrete Mathematics. McGraw-Hill, 1977.