Hope, A., & Nagler, J. (1991). Guide to German Historical Sources in North American Libraries and Archives: Anne Hope, Jörg Nagler. German Historical Institute.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHope, Anne, और Jörg Nagler. Guide to German Historical Sources in North American Libraries and Archives: Anne Hope, Jörg Nagler. Washington, D.C.: German Historical Institute, 1991.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHope, Anne, और Jörg Nagler. Guide to German Historical Sources in North American Libraries and Archives: Anne Hope, Jörg Nagler. German Historical Institute, 1991.
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