Virtual Reality Expo London, England, & Helsel, S. K. (1994). VR'94: London Virtual Reality Expo'94 : proceedings of the fourth annual conference on virtual reality, held in London in February 1994. Mecklermedia.
Chicago Style (17th ed.) CitationVirtual Reality Expo London, England, and Sandra K. Helsel. VR'94: London Virtual Reality Expo'94 : Proceedings of the Fourth Annual Conference on Virtual Reality, Held in London in February 1994. Westport, CT: Mecklermedia, 1994.
MLA (8th ed.) CitationVirtual Reality Expo London, England, and Sandra K. Helsel. VR'94: London Virtual Reality Expo'94 : Proceedings of the Fourth Annual Conference on Virtual Reality, Held in London in February 1994. Mecklermedia, 1994.
Warning: These citations may not always be 100% accurate.