APA (7th ed.) Citation

Sobell, M. G. (1984). A practical guide to the UNIX system. Benjamin/Cummings Pub. Co.

Chicago Style (17th ed.) Citation

Sobell, Mark G. A Practical Guide to the UNIX System. Menlo Park, Calif: Benjamin/Cummings Pub. Co, 1984.

MLA (9th ed.) Citation

Sobell, Mark G. A Practical Guide to the UNIX System. Benjamin/Cummings Pub. Co, 1984.

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