@book{550,
	author = {Diez, Manuel María and Hutchinson, Tomás A.},
	title = {Manual de derecho administrativo},
	publisher = {Plus Ultra},
	year = {1997},
	address = {Buenos Aires :},
	edition = {6a. ed.},
	url = {https://biblioeco.unsa.edu.ar/pmb/images/libros/L85532.jpg}
}