@book{90925,
	author = {Wittgenstein, Ludwig and Wittgenstein, Ludwig},
	title = {Los cuadernos azul y marrón},
	publisher = {Editorial Tecnos},
	year = {1976.},
	series = {Estructura y función,},
	address = {Madrid},
	edition = {1. ed., reimpresión.},
	note = {Translation of Das blaue Buch.}
}