@book{41389,
	author = {Ramírez Cleves, Gonzalo Andrés,},
	title = {Ecos de Kelsen :},
	publisher = {Universidad Externado de Colombia,},
	year = {octubre del 2012.},
	address = {Bogotá :},
	edition = {Primera edición.},
	url = {https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/39894}
}