@book{31223,
	author = {Placencia Valero, Job,},
	title = {Compendio de matématica básica elemental /},
	publisher = {Editorial Tébar,},
	year = {2008.},
	address = {Madrid :},
	url = {https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/17458/}
}