@book{611979,
	author = {Johnsonbaugh, Richard},
	title = {Matemáticas discretas},
	publisher = {Pearson Education,},
	year = {1999.},
	address = {México :},
	edition = {4. ed.},
	url = {http://aplicacionesbiblioteca.udea.edu.co:2048/login?url=https://www.bibliotechnia.com.mx/Busqueda/resumen/632_259544}
}