APA (7th ed.) Citation

Dougherty, D., & O'Reilly, T. (1989). Unix text processing (4. printing.). Hayden Books.

Chicago Style (17th ed.) Citation

Dougherty, Dale, and Tim O'Reilly. Unix Text Processing. 4. printing. Indianapolis, Ind: Hayden Books, 1989.

MLA (9th ed.) Citation

Dougherty, Dale, and Tim O'Reilly. Unix Text Processing. 4. printing. Hayden Books, 1989.