@book{229041,
	author = {Métall, Rudolf Aladár and Esquivel, Javier},
	title = {Hans Kelsen},
	publisher = {Ediciones Coyoacán},
	year = {2009.},
	series = {Derecho y Sociedad},
	address = {México},
	edition = {1a ed. (Ed. Coyoacán)}
}