APA (7th ed.) Citation

Hope, A., & Nagler, J. (1991). Guide to German historical sources in North American libraries and archives. German Historical Inst.

Chicago Style (17th ed.) Citation

Hope, Anne, and Jörg Nagler. Guide to German Historical Sources in North American Libraries and Archives. Washington, DC: German Historical Inst, 1991.

MLA (8th ed.) Citation

Hope, Anne, and Jörg Nagler. Guide to German Historical Sources in North American Libraries and Archives. German Historical Inst, 1991.