@book{132960,
	author = {Royo Villanova, Antonio, and Royo Villanova, Segismundo.},
	title = {Elementos de Derecho Administrativo / },
	editor = {Imp. Castellana)},
	publisher = {[s. n.], },
	year = {1960 (},
	address = {Valladolid : },
	edition = {25ª ed. }
}