@book{104456,
	author = {Erreguerena, María Luisa, and Martín de Nicolás Moreno, María del Mar,},
	title = {La mañana de un día difícil /},
	publisher = {Arco/Libros, S. L.,},
	year = {[2004]},
	series = {Serie Lecturas graduadas},
	address = {Madrid :},
	url = {https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/137694/}
}