APA (7th ed.) Citation

Ritchie, C. Operating systems: Incorporating UNIX & Windows (3rd ed.).

Chicago Style (17th ed.) Citation

Ritchie, Colin. Operating Systems: Incorporating UNIX & Windows. 3rd ed.

MLA (9th ed.) Citation

Ritchie, Colin. Operating Systems: Incorporating UNIX & Windows. 3rd ed.

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