@book{41440,
	author = {Hinestrosa, Fernando,},
	title = {Tratado de las obligaciones.},
	publisher = {Universidad Externado de Colombia,},
	year = {[2007]},
	address = {Bogotá :},
	edition = {Tercera edición.},
	url = {https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/39947/}
}