Roden, J. W. Emil Ludwig's Political Writings during his U.S. exile 1940 - 1945: Johanna W. Roden. Deutsche Exilliteratur - Literatur der Nachkriegszeit : Akten des 3. Exilliteratur-Symposiums der Univesity of South Carolina.(1981).
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRoden, Johanna W. "Emil Ludwig's Political Writings During His U.S. Exile 1940 - 1945: Johanna W. Roden." Deutsche Exilliteratur - Literatur Der Nachkriegszeit : Akten Des 3. Exilliteratur-Symposiums Der Univesity of South Carolina.(1981) .
एमएलए (8वां संस्करण) प्रशस्ति पत्रRoden, Johanna W. "Emil Ludwig's Political Writings During His U.S. Exile 1940 - 1945: Johanna W. Roden." Deutsche Exilliteratur - Literatur Der Nachkriegszeit : Akten Des 3. Exilliteratur-Symposiums Der Univesity of South Carolina.(1981), .
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