APA (7th ed.) Citation

Leach, G. W. (1993). UNIX: Self teaching guide. Wiley.

Chicago Style (17th ed.) Citation

Leach, George W. UNIX: Self Teaching Guide. New York: Wiley, 1993.

MLA (9th ed.) Citation

Leach, George W. UNIX: Self Teaching Guide. Wiley, 1993.