Viewdata '80 London, England. (1980). Viewdata and videotext, 1980-81: A worldwide report : transcript of Viewdata '80, First World Conference on Viewdata, Videotex, and Teletext. Knowledge Industry Publications.
Chicago Style (17th ed.) CitationViewdata '80 London, England. Viewdata and Videotext, 1980-81: A Worldwide Report : Transcript of Viewdata '80, First World Conference on Viewdata, Videotex, and Teletext. White Plains, N.Y.: Knowledge Industry Publications, 1980.
MLA (9th ed.) CitationViewdata '80 London, England. Viewdata and Videotext, 1980-81: A Worldwide Report : Transcript of Viewdata '80, First World Conference on Viewdata, Videotex, and Teletext. Knowledge Industry Publications, 1980.
Warning: These citations may not always be 100% accurate.