Hope, A., & Nagler, J. (1991). Guide to German Historical Sources in North American Libraries and Archives: Anne Hope, Jörg Nagler. German Historical Institute.
Citazione stile Chigago Style (17a edizione)Hope, Anne, e Jörg Nagler. Guide to German Historical Sources in North American Libraries and Archives: Anne Hope, Jörg Nagler. Washington, D.C.: German Historical Institute, 1991.
Citatione MLA (8a ed.)Hope, Anne, e 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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