@book{228914,
	author = {Mario Ignacio Álvarez Ledesma},
	title = {Introducción al Derecho, 4th Edition},
	publisher = {McGraw-Hill Interamericana,},
	year = {2019},
	address = {Mexico :},
	edition = {fourth edition},
	url = {https://resolver.vitalsource.com/9781456271664}
}