1. Lee de Forest;Adams,2011
2. Amidon, A., 2018. Film Preservation 101: Is Nitrate Film Really Dangerous? [online] The Unwritten Record. Available at: https://unwritten-record.blogs.archives.gov/2018/12/10/film-preservation-101-is-nitrate-film-really-dangerous/.
3. Disk recording and reproduction;Bachman;Proceedings of the IRE,1962
4. Bullis, H.C., 1917. Method of producing magnetic sound-records for talking-motion-picture films. [online] Available at: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/1213150 (accessed 25.04.23).
5. The History Of Music Production;Burgess,2014