APA (7th ed.) Citation

Shelly, Cashman, & Vermaat. (2004). Discovering computers 2004: A gateway to information. Thomson Course Technology.

Chicago Style (17th ed.) Citation

Shelly, Cashman, and Vermaat. Discovering Computers 2004: A Gateway to Information. Boston: Thomson Course Technology, 2004.

MLA (8th ed.) Citation

Shelly, et al. Discovering Computers 2004: A Gateway to Information. Thomson Course Technology, 2004.