Frohn, A., & Hope, A. (1989). Guide to Inventories and finding aids of german Archives: Axel Frohn. With the assistance of Anne Hope. : German Historical Institute.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Frohn, Axel, و Anne Hope. Guide to Inventories and Finding Aids of German Archives: Axel Frohn. With the Assistance of Anne Hope. Washington: : German Historical Institute, 1989.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Frohn, Axel, و Anne Hope. Guide to Inventories and Finding Aids of German Archives: Axel Frohn. With the Assistance of Anne Hope. : German Historical Institute, 1989.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.