Dyfyniad APA

(1988). IBM using disk operating system version 4.00. Perfect Bound Pub.

Dyfyniad Arddull Chicago

IBM Using Disk Operating System Version 4.00. Quezon City: Perfect Bound Pub, 1988.

Dyfyniad MLA

IBM Using Disk Operating System Version 4.00. Perfect Bound Pub, 1988.

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