(2005). Germany: Report on Observance of Standards and Codes - Data Module, Response by the Authorities, and Detailed Assessment Using the Data Quality Assessment Framework (DQAF).
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Germany: Report on Observance of Standards and Codes - Data Module, Response by the Authorities, and Detailed Assessment Using the Data Quality Assessment Framework (DQAF). Washington, D.C, 2005.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Germany: Report on Observance of Standards and Codes - Data Module, Response by the Authorities, and Detailed Assessment Using the Data Quality Assessment Framework (DQAF). 2005.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.