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BB	Brualdi, Richard A. : Introductory combinatorics / Richard A. Brualdi . - 5th ed. Upper Saddle River, New Jersey : Pearson Prentice Hall, cop. 2010
BC	GRIMALDI, R. P. Discrete and combinatorial mathematics : an applied introduction. 5th ed. [s. l.]: Pearson, 2018. ISBN 9780321385024.
BC	Pemmaraju, Sriram. Computational discrete mathematics : combinatorics and graph theory with mathematica / Sriram Pemmaraju, Steven Skiena . 1st publ., repr. Cambridge : Cambridge University Press, 2009