BB BONA, M. A walk through combinatorics : an introduction to enumeration and graph theory. 4th ed., reprint. [s. l.]: World Scientific, 2019. ISBN 9789813148840.
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
 
LISTADO DE URLs:
 
  Apuntes del profesor: Elementos de Combinatoria y Teoría de Grafos
[http://add.unizar.es/add/area/index.php]
  Discrete Mathematics Web Site!
[http://www.mhhe.com/math/advmath/rosen/]
  Fibonacci Numbers and the Golden Section
[http://www.maths.surrey.ac.uk/hosted-sites/R.Knott/Fibonacci/fib.html]
  Graph Theory
[http://www.math.fau.edu/locke/graphthe.html]
  Open Problems for Undergraduates
[http://dimacs.rutgers.edu/%7Ehochberg/undopen/]
  Reinhard Diestel : Graph Theory
[http://diestel-graph-theory.com/index.html]
  The book "generatingfunctionology"
[http://www.math.upenn.edu/~wilf/DownldGF.html]
  The On-Line Encyclopedia of Integer Sequences™ (OEIS™)
[http://www.research.att.com/~njas/sequences/]