@book{69601,
	author = {Quesada Sanz, Fernando.},
	title = {Ultima ratio regis :},
	publisher = {Ediciones Polifemo :},
	year = {2009.},
	address = {Madrid },
	url = {https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/18956/}
}