APA (7th ed.) Citation

Discovery Channel School & ENTREX SOFTWARE. (2004). Viruses [computer file]. Discovery Communications, Inc.

Chicago Style (17th ed.) Citation

Discovery Channel School and ENTREX SOFTWARE. Viruses [computer File]. U.S.A: Discovery Communications, Inc, 2004.

MLA (9th ed.) Citation

Discovery Channel School and ENTREX SOFTWARE. Viruses [computer File]. Discovery Communications, Inc, 2004.

Warning: These citations may not always be 100% accurate.