Berge, C. (1989). Hyper graphs: Combinatorics of finite sets.
Dyfyniad Arddull ChicagoBerge, C. Hyper Graphs: Combinatorics of Finite Sets. North Holland, 1989.
Dyfyniad MLABerge, C. Hyper Graphs: Combinatorics of Finite Sets. 1989.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.