Merrill, P. C. (1997). German Immigrant Artists in America: A Biographical Dictionary. Scarecrow Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMerrill, Peter C. German Immigrant Artists in America: A Biographical Dictionary. Lanham [u.a.]: Scarecrow Press, 1997.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMerrill, Peter C. German Immigrant Artists in America: A Biographical Dictionary. Scarecrow Press, 1997.
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