Knust, H. East-West encounters in Brecht's Szechwan play: Herbert Knust. Comparative literature East and West : traditions and trends : selected conference papers.(1989).
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Knust, Herbert. "East-West Encounters in Brecht's Szechwan Play: Herbert Knust." Comparative Literature East and West : Traditions and Trends : Selected Conference Papers.(1989) .
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Knust, Herbert. "East-West Encounters in Brecht's Szechwan Play: Herbert Knust." Comparative Literature East and West : Traditions and Trends : Selected Conference Papers.(1989), .
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