Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

Leach, George W. UNIX: Self-teaching Guide. Wiley, 1993.