Biggs,Norman.L. (2012). Discrete Mathematics (2nd ed.). Oxford Uni.
Chicago-čujuhus (17. p.)Biggs,Norman.L. Discrete Mathematics. 2nd ed. New Delhi: Oxford Uni, 2012.
MLA-čujuhus (9. p.)Biggs,Norman.L. Discrete Mathematics. 2nd ed. Oxford Uni, 2012.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.