Cita APA (7a ed.)

Liu, C. L., & Liu, C. L. (1985). Elements of discrete mathematics (2nd ed.). McGraw-Hill.

Cita Chicago Style (17a ed.)

Liu, C. L., y Chung Laung Liu. Elements of Discrete Mathematics. 2nd ed. New York: McGraw-Hill, 1985.

Cita MLA (8a ed.)

Liu, C. L., y Chung Laung Liu. Elements of Discrete Mathematics. 2nd ed. McGraw-Hill, 1985.