International Federation of Library Associations and Institutions. Section on Preservation and Conservation, IFLA Core Activity on Preservation and Conservation, Council on Library and Information Resources, ebrary, Inc, Wellheiser, J. G., & Gwinn, N. E. (2005). Preparing for the worst, planning for the best: Proceedings of a conference sponsored by the IFLA Preservation and Conservation Section, the IFLA Core Activity for Preservation and Conservation, and the Council on Library and Information Resources, Inc., with the Akademie der Wissenschaften and the Staatsbibliothek zu Berlin, Berlin, Germany, July 30 - August 1, 2003. K.G. Saur.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)International Federation of Library Associations and Institutions. Section on Preservation and Conservation, IFLA Core Activity on Preservation and Conservation, Council on Library and Information Resources, Inc ebrary, Johanna G. Wellheiser, و Nancy E. Gwinn. Preparing for the Worst, Planning for the Best: Proceedings of a Conference Sponsored by the IFLA Preservation and Conservation Section, the IFLA Core Activity for Preservation and Conservation, and the Council on Library and Information Resources, Inc., with the Akademie Der Wissenschaften and the Staatsbibliothek Zu Berlin, Berlin, Germany, July 30 - August 1, 2003. München: K.G. Saur, 2005.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)International Federation of Library Associations and Institutions. Section on Preservation and Conservation, et al. Preparing for the Worst, Planning for the Best: Proceedings of a Conference Sponsored by the IFLA Preservation and Conservation Section, the IFLA Core Activity for Preservation and Conservation, and the Council on Library and Information Resources, Inc., with the Akademie Der Wissenschaften and the Staatsbibliothek Zu Berlin, Berlin, Germany, July 30 - August 1, 2003. K.G. Saur, 2005.