Levy, J., & Bjelland, H. (1995). Create your own virtual reality system. Windcrest/McGraw-Hill.

Levy, Joseph, and Harley Bjelland. Create Your Own Virtual Reality System. New York: Windcrest/McGraw-Hill, 1995.

Levy, Joseph, and Harley Bjelland. Create Your Own Virtual Reality System. Windcrest/McGraw-Hill, 1995.