APA (7th ed.) Citation

Leach, G. W. (1993). UNIX. Self-teaching guide ([1st ed.].). John Wiley & Sons.

Chicago Style (17th ed.) Citation

Leach, George W. UNIX. Self-teaching Guide. [1st ed.]. New York: John Wiley & Sons, 1993.

MLA (9th ed.) Citation

Leach, George W. UNIX. Self-teaching Guide. [1st ed.]. John Wiley & Sons, 1993.