Grimm, R. Naturalism and epic drama: Reinhold Grimm. Essays on Brecht : theater and politics.(1974).
Lua i Stíl Chicago (17ú heag.)Grimm, Reinhold. "Naturalism and Epic Drama: Reinhold Grimm." Essays on Brecht : Theater and Politics.(1974) .
Lua MLA (8ú heag.)Grimm, Reinhold. "Naturalism and Epic Drama: Reinhold Grimm." Essays on Brecht : Theater and Politics.(1974), .
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