*[http://www.z64k.com/ Z64K: C128, C64, VIC20, and Atari 2600 emulators]
*[https://archive.org/stream/run-magazine-18/Run_Issue_18_1985_Jun#page/n47/mode/2up RUN Magazine Issue 18 June 1985]
*[https://hackaday.com/2013/12/09/guest-post-the-real-story-of-hacking-together-the-commodore-c128/ hackaday.com: Guest Post: The Real Story of Hacking Together the Commodore C128, by: Bil Herd] (dated 2013-12-09)