Thomson, P., & Sacks, G. (2006). The Cambridge companion to Brecht: Ed. by Peter Thomson and Glendyr Sacks (2. ed.). Cambridge University Press.

Thomson, Peter, and Glendyr Sacks. The Cambridge Companion to Brecht: Ed. by Peter Thomson and Glendyr Sacks. 2. ed. Cambridge: Cambridge University Press, 2006.

Thomson, Peter, and Glendyr Sacks. The Cambridge Companion to Brecht: Ed. by Peter Thomson and Glendyr Sacks. 2. ed. Cambridge University Press, 2006.