APA (7th ed.) Citation

Groff, J. R., & Weinberg, P. N. (1983). Understanding UNIX: A conceptual guide. Que Corp..

Chicago Style (17th ed.) Citation

Groff, James R., and Paul N. Weinberg. Understanding UNIX: A Conceptual Guide. Indianapolis: Que Corp., 1983.

MLA (9th ed.) Citation

Groff, James R., and Paul N. Weinberg. Understanding UNIX: A Conceptual Guide. Que Corp., 1983.

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