@book{71123,
	author = {Pérez Cino, Waldo,},
	title = {Manual práctico de gramática española :},
	publisher = {Editorial Verbum,},
	year = {2013.},
	series = {Colección Cervantes},
	address = {Madrid :},
	url = {https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/32940/}
}