Dyfyniad APA

National Computing Centre Limited. (1983). Computer contracts. NCC.

Dyfyniad Arddull Chicago

National Computing Centre Limited. Computer Contracts. Manchester: NCC, 1983.

Dyfyniad MLA

National Computing Centre Limited. Computer Contracts. NCC, 1983.

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