^Squiers, Anthony (2014). An Introduction to the Social and Political Philosophy of Bertolt Brecht: Revolution and Aesthetics. Amsterdam: Rodopi. p. 190.
ISBN9789042038998.
Works cited
Willett, John. 1959. The Theatre of Bertolt Brecht: A Study from Eight Aspects. London: Methuen.
ISBN0-413-34360-X.