APA استشهاد

Marrin,, C. (1998). Teach yourself VRML 2 in 21 days. Techmedia.

استشهاد بنمط شيكاغو

Marrin,, Chris. Teach Yourself VRML 2 in 21 Days. New Delhi: Techmedia, 1998.

MLA استشهاد

Marrin,, Chris. Teach Yourself VRML 2 in 21 Days. Techmedia, 1998.