APA (7th ed.) Citation

Safari Tech Books Online, Allen, R. A., Lowe-Norris, A. G. C., & Lowe-Norris, A. G. C. (2003). Active Directory (2nd ed.). O'Reilly.

Chicago Style (17th ed.) Citation

Safari Tech Books Online, Robbie Author Allen, Alistair G. Contributor Lowe-Norris, and Alistair G Contributor Lowe-Norris. Active Directory. 2nd ed. [Place of publication not identified]: O'Reilly, 2003.

MLA (9th ed.) Citation

Safari Tech Books Online, et al. Active Directory. 2nd ed. O'Reilly, 2003.