Hill, C., & Ley, R. (1960). The Drama of German Expressionism: A German-English Bibliography. The University of North Carolina Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHill, Claude, और Ralph Ley. The Drama of German Expressionism: A German-English Bibliography. Chapel Hill: The University of North Carolina Press, 1960.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHill, Claude, और Ralph Ley. The Drama of German Expressionism: A German-English Bibliography. The University of North Carolina Press, 1960.
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