APA (7th ed.) Citation

Safari Tech Books Online, Laurie, B. A., & Laurie, P. C. (1999). Apache: The definitive guide (Second edition.). O'Reilly.

Chicago Style (17th ed.) Citation

Safari Tech Books Online, Ben Author Laurie, and Peter Contributor Laurie. Apache: The Definitive Guide. Second edition. [Place of publication not identified]: O'Reilly, 1999.

MLA (9th ed.) Citation

Safari Tech Books Online, et al. Apache: The Definitive Guide. Second edition. O'Reilly, 1999.