@book{67059,
	author = {Hawking, Stephen William,   and Sagan, Carl,},
	title = {Historia del tiempo :},
	publisher = {Planeta Colombiana,},
	year = {2013},
	series = {Colección booket},
	address = {Bogotá :},
	edition = {12a edición},
	note = {1 copia sala}
}