@book{18138,
	author = {Hessen, Johan and Gaos, José},
	title = {Teoría del conocimiento. /},
	publisher = {Losada,},
	year = {1960.},
	series = {Biblioteca contemporánea},
	address = {Buenos Aires :},
	edition = {5a ed.},
	note = {Traducido del alemán}
}