Gaya APA

Graham, J. et al (2012). Sniffy The Virtual Rat Pro Version 3.0 (with CD Rom) . United State of America: Wadsworth Cengage Learning.

Gaya MLA

Graham, Jeff. et al. "Sniffy The Virtual Rat Pro Version 3.0 (with CD Rom)". United State of America: Wadsworth Cengage Learning, 2012. Text.