IASA Technical Committee, The Safeguarding of the Audiovisual Heritage: Ethics, Principles and Preservation Strategy, Co-Edited by Will Prentice and Lars Gaustad. Version 4, 2017 (= Standards, Recommended Practices and Strategies, IASA-TC 03). International Association of Sound and Audiovisual Archives. www.iasa-web.org/tc03/ethics-principles-preservation-strategy