Não informado. (2008). International Preservation News. International Federation of Library Associations and Institutions Core Programme on Preservation and Conservation.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Não informado. International Preservation News. Paris: International Federation of Library Associations and Institutions Core Programme on Preservation and Conservation, 2008.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Não informado. International Preservation News. International Federation of Library Associations and Institutions Core Programme on Preservation and Conservation, 2008.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.