Johnsen, J. S. (1997). Conservation management and archival survival of photographic collections. Acta Universitatis Gothoburgensis.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रJohnsen, Jesper Stub. Conservation Management and Archival Survival of Photographic Collections. Göteborg, Sweden: Acta Universitatis Gothoburgensis, 1997.
एमएलए (8वां संस्करण) प्रशस्ति पत्रJohnsen, Jesper Stub. Conservation Management and Archival Survival of Photographic Collections. Acta Universitatis Gothoburgensis, 1997.
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