Cita APA

Martin, C., & Campbell, B. (1997). Teach yourself VRML2 in 21 days. Techmedia.

Chicago Edition Citation

Martin, Chris, i Bruce Campbell. Teach Yourself VRML2 in 21 Days. New Delhi: Techmedia, 1997.

Cita MLA

Martin, Chris, i Bruce Campbell. Teach Yourself VRML2 in 21 Days. Techmedia, 1997.