@book{119421,
	author = {Benavides, José Luis },
	title = {Contratos públicos :},
	publisher = {Universidad Externado de Colombia,},
	year = {2014.},
	series = {Temas de derecho administrativo ;},
	address = {Bogotá :},
	edition = {Primera edición.},
	url = {http://www.loc.gov/catdir/toc/fy16pdf02/2015404439.html}
}