APA (7th ed.) Citation

Todino, G., Strang, J., & O'Reilly, T. (1989). Learning the UNIX operating system (Minor revisions / Tim O'Reilly.). O'Reilly.

Chicago Style (17th ed.) Citation

Todino, Grace, John Strang, and Tim O'Reilly. Learning the UNIX Operating System. Minor revisions / Tim O'Reilly. Newton, MA: O'Reilly, 1989.

MLA (9th ed.) Citation

Todino, Grace, et al. Learning the UNIX Operating System. Minor revisions / Tim O'Reilly. O'Reilly, 1989.