@book{25654,
	author = {Tusón, Jesús,},
	title = {Introducción al lenguaje /},
	publisher = {Universitat Oberta de Catalunya,},
	year = {2003.},
	series = {Manuales ;},
	address = {Barcelona :},
	edition = {Primera edición en lengua castellana. },
	url = {https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/973/}
}