Grattan, D. W., & Marcil, S. (1993). Saving the twentieth century: The conservation of modern materials ; proceedings of a conference ; symposium '91 - Saving the twentieth century, Ottawa, Canada 15 to 20 september 1991 / organized by the Canadian Conservation Institute, Communications Canada. Ed. by David W. Grattan (1.). Canadian Conservation Inst..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGrattan, David W., और Sylvie Marcil. Saving the Twentieth Century: The Conservation of Modern Materials ; Proceedings of a Conference ; Symposium '91 - Saving the Twentieth Century, Ottawa, Canada 15 to 20 September 1991 / Organized by the Canadian Conservation Institute, Communications Canada. Ed. by David W. Grattan. 1. Ottawa: Canadian Conservation Inst., 1993.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGrattan, David W., और Sylvie Marcil. Saving the Twentieth Century: The Conservation of Modern Materials ; Proceedings of a Conference ; Symposium '91 - Saving the Twentieth Century, Ottawa, Canada 15 to 20 September 1991 / Organized by the Canadian Conservation Institute, Communications Canada. Ed. by David W. Grattan. 1. Canadian Conservation Inst., 1993.