Dyfyniad APA

Ritchie, C. (2003). Operating systems.-3rd ed (3rd ed.). BPB.

Dyfyniad Arddull Chicago

Ritchie, Collin. Operating Systems.-3rd Ed. 3rd ed. New Delhi: BPB, 2003.

Dyfyniad MLA

Ritchie, Collin. Operating Systems.-3rd Ed. 3rd ed. BPB, 2003.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.