@book{94389,
	author = {Serrano, María José,},
	title = {Estudios de variación sintáctica /},
	publisher = {Iberoamericana ;},
	year = {1999.},
	address = {Madrid :},
	url = {https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/112739/}
}