@book{539,
	author = {Brecht, Bertolt, and Hecht, Werner,},
	title = {El Compromiso en literatura y arte /},
	publisher = {Península,},
	year = {1973},
	series = {Historia, ciencia, sociedad ;},
	address = {[Barcelona] :},
	edition = {1ª ed},
	note = {Tít. orig.: Schriften zur Literatur und Kunst}
}