Niveau élémentaire :
Must have : Benjamin and Quinn, Proofs that Really Count: The Art of Combinatorial Proof, MAA, 2003
En plus : Andreescu and Feng, A Path to Combinatorics for Undergraduates: Counting Strategies, Birkhäuser, 2004
Herman, Kucera and Simsa, Counting and Configurations, Springer, 2003
Niveau avancé :
Lovasz, Combinatorial Problems and Exercises, AMS Chelsea Publishing, 2007
Réponses
Must have : Benjamin and Quinn, Proofs that Really Count: The Art of Combinatorial Proof, MAA, 2003
En plus : Andreescu and Feng, A Path to Combinatorics for Undergraduates: Counting Strategies, Birkhäuser, 2004
Herman, Kucera and Simsa, Counting and Configurations, Springer, 2003
Niveau avancé :
Lovasz, Combinatorial Problems and Exercises, AMS Chelsea Publishing, 2007