@book{4705,
	author = {Strathern, Paul},
	title = {Wittgenstein (1889-1951) en 90 minutos },
	publisher = {Siglo Veintiuno},
	year = {2004},
	series = {Filósofos en 90 minutos},
	address = {Madrid },
	edition = {2a. edición }
}