APA (7th ed.) Citation

Ward, B. (2004). How Linux works: What every superuser should know. No Starch Press.

Chicago Style (17th ed.) Citation

Ward, Brian. How Linux Works: What Every Superuser Should Know. San Francisco: No Starch Press, 2004.

MLA (8th ed.) Citation

Ward, Brian. How Linux Works: What Every Superuser Should Know. No Starch Press, 2004.

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