Sources
Ampex Corporation. c. 1989. Magnetic Tape Division. "A Guide to Media and Formats."
Maxell Corporation of America. 1986. "The Official Guide to Videotape."
Aaron Nmungwun. 1989. Video Recording Technology: Its Impact on Media and Home Technology.
Peter Utz. 1989. Video User's Handbook. 3rd Edition.
Mika Iisakkila's Video Recording Formats site.
For key links on the history and preservation of video see the Electronic Media Group's Links page and Resources page.