APA (7 वां संस्करण) प्रशस्ति पत्र

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 पत्र

Hill, 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 पत्र

Hill, Claude, और Ralph Ley. The Drama of German Expressionism: A German-English Bibliography. The University of North Carolina Press, 1960.