@book{8803,
	author = {Sánchez Vázquez, Adolfo},
	title = {Etica.},
	publisher = {Grijalbo,},
	year = {1969.},
	series = {Tratados y Manuales Grijalbo},
	address = {México :},
	edition = {47a ed.},
	note = {p.243.}
}