Knapp, G. P. Some Remarks About the Inherent Discrepancies Between Georg Büchner's Drama and Gottfried von Einem's Opera "Danton's Tod": Gerhard P. Knapp. Literature and the other arts.(1981).
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Knapp, Gerhard P. "Some Remarks About the Inherent Discrepancies Between Georg Büchner's Drama and Gottfried Von Einem's Opera "Danton's Tod": Gerhard P. Knapp." Literature and the Other Arts.(1981) .
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Knapp, Gerhard P. "Some Remarks About the Inherent Discrepancies Between Georg Büchner's Drama and Gottfried Von Einem's Opera "Danton's Tod": Gerhard P. Knapp." Literature and the Other Arts.(1981), .
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