Παραπομπή σε μορφή APA (7η εκδ.)

Bollobas, B. (1990). Combinatorics: Set systems, hypergraphs, families of vectors and combinatorial probability. Cambridge University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Bollobas, Bela. Combinatorics: Set Systems, Hypergraphs, Families of Vectors and Combinatorial Probability. Campridge: Cambridge University Press, 1990.

Παραπομπή σε μορφή MLA (8th εκδ.)

Bollobas, Bela. Combinatorics: Set Systems, Hypergraphs, Families of Vectors and Combinatorial Probability. Cambridge University Press, 1990.