APA استشهاد

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

استشهاد بنمط شيكاغو

Liu, Chung Laung. Elements of Discrete Mathematics. New York: McGraw-Hill, 1977.

MLA استشهاد

Liu, Chung Laung. Elements of Discrete Mathematics. McGraw-Hill, 1977.