Não informado. (2008). International Preservation News. International Federation of Library Associations and Institutions Core Programme on Preservation and Conservation.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. International Preservation News. Paris: International Federation of Library Associations and Institutions Core Programme on Preservation and Conservation, 2008.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. International Preservation News. International Federation of Library Associations and Institutions Core Programme on Preservation and Conservation, 2008.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.