Marrin,, C. (1998). Teach yourself VRML 2 in 21 days. Techmedia.
Dyfyniad Arddull ChicagoMarrin,, Chris. Teach Yourself VRML 2 in 21 Days. New Delhi: Techmedia, 1998.
Dyfyniad MLAMarrin,, Chris. Teach Yourself VRML 2 in 21 Days. Techmedia, 1998.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.