@book{30810,
	author = {Berceo, Gonzalo de,},
	title = {De los signos que aparecerán ante del juicio /},
	publisher = {www.Linkgua.com,},
	year = {2011. },
	series = {Religion.},
	address = {Barcelona :},
	url = {https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/16734/}
}