Nemeth, E., Snyder, G., Seebass, S., & Hein, T. R. (2001). UNIX system administration handbook (Third edition.). Prentice Hall PTR.

Nemeth, Evi, Garth Snyder, Scott Seebass, and Trent R. Hein. UNIX System Administration Handbook. Third edition. New Jersey: Prentice Hall PTR, 2001.

Nemeth, Evi, et al. UNIX System Administration Handbook. Third edition. Prentice Hall PTR, 2001.