APA (7th ed.) Citation

Ray, D. S., & Ray, E. J. (2006). Unix (3rd ed.). Peachpit Press.

Chicago Style (17th ed.) Citation

Ray, Deborah S., and Eric J. Ray. Unix. 3rd ed. Berkeley, Calif.: Peachpit Press, 2006.

MLA (8th ed.) Citation

Ray, Deborah S., and Eric J. Ray. Unix. 3rd ed. Peachpit Press, 2006.

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