@book{83417,
	author = {Cañón Ortegón, Leonardo,},
	title = {Una visión integral de la seguridad social /},
	publisher = {Universidad Externado de Colombia,},
	year = {[2017]},
	address = {Bogotá :},
	edition = {3a. ed.},
	url = {https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/68775/}
}