@book{2007,
	author = {Porto Macedo Junior, Ronaldo},
	title = {Del ajedrez a la cortesía},
	publisher = {AD-HOC},
	year = {2015},
	address = {Buenos Aires :},
	url = {https://biblioeco.unsa.edu.ar/pmb/images/libros/Teoria Contemporanea del Derecho-l125115.jpg}
}