APA (7th ed.) Citation

Discover Channel School, QuickTime, & World Book. (2005). Mammals [computer file]. Discovery Communications, Inc.

Chicago Style (17th ed.) Citation

Discover Channel School, QuickTime, and World Book. Mammals [computer File]. [U.S.A.]: Discovery Communications, Inc, 2005.

MLA (9th ed.) Citation

Discover Channel School, et al. Mammals [computer File]. Discovery Communications, Inc, 2005.