@book{31705,
	author = {Johnsonbaugh, Richard. and González Osuna, Marcia Aida,},
	title = {Matemáticas discretas /},
	publisher = {Pearson Prentice Hall,},
	year = {2005.},
	address = {Mexico :},
	edition = {6a ed.},
	note = {Incluye indice.}
}