APA (7th ed.) Citation

Haycox, I., Hildebrandt, R., Rusenko, D., McDonald, A., Koetter, P. B., Taylor, C., & Back, M. (2009). Linux Email: Set Up, Maintain, and Secure a Small Office Email Server.

Chicago Style (17th ed.) Citation

Haycox, Ian, Ralf Hildebrandt, David Rusenko, Alistair McDonald, Patrick Ben Koetter, Carl Taylor, and Magnus Back. Linux Email: Set Up, Maintain, and Secure a Small Office Email Server. 2009.

MLA (9th ed.) Citation

Haycox, Ian, et al. Linux Email: Set Up, Maintain, and Secure a Small Office Email Server. 2009.