Ritchie, C. (1995). Operating systems: Incorporating UNIX and MS-DOS (Second edition.). BPB Publications.
Lua i Stíl Chicago (17ú heag.)Ritchie, C. Operating Systems: Incorporating UNIX and MS-DOS. Second edition. New Delhi: BPB Publications, 1995.
Lua MLA (8ú heag.)Ritchie, C. Operating Systems: Incorporating UNIX and MS-DOS. Second edition. BPB Publications, 1995.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.