Bahr, G. E. Roundheads and peakheads: the truth about evil times: Gisela E. Bahr. Essays on Brecht : theater and politics.(1974).
Lua i Stíl Chicago (17ú heag.)Bahr, Gisela E. "Roundheads and Peakheads: The Truth About Evil Times: Gisela E. Bahr." Essays on Brecht : Theater and Politics.(1974) .
Lua MLA (8ú heag.)Bahr, Gisela E. "Roundheads and Peakheads: The Truth About Evil Times: Gisela E. Bahr." Essays on Brecht : Theater and Politics.(1974), .
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