APA (7th ed.) Citation

Regan, S., & Pugh, D. (2006). Mac OS X system administration reference. Peachpit Press.

Chicago Style (17th ed.) Citation

Regan, Schoun, and David Pugh. Mac OS X System Administration Reference. Berkeley, CA: Peachpit Press, 2006.

MLA (9th ed.) Citation

Regan, Schoun, and David Pugh. Mac OS X System Administration Reference. Peachpit Press, 2006.

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