Thomson, P., & Sacks, G. (2006). The Cambridge companion to Brecht: Ed. by Peter Thomson and Glendyr Sacks (2. ed.). Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)Thomson, Peter, agus Glendyr Sacks. The Cambridge Companion to Brecht: Ed. by Peter Thomson and Glendyr Sacks. 2. ed. Cambridge: Cambridge University Press, 2006.
Lua MLA (8ú heag.)Thomson, Peter, agus Glendyr Sacks. The Cambridge Companion to Brecht: Ed. by Peter Thomson and Glendyr Sacks. 2. ed. Cambridge University Press, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.