Dyfyniad APA

Johnson, D. (1999). Upgrading & repairing your PC answers! McGraw-Hill.

Dyfyniad Arddull Chicago

Johnson, Dave. Upgrading & Repairing Your PC Answers! McGraw-Hill, 1999.

Dyfyniad MLA

Johnson, Dave. Upgrading & Repairing Your PC Answers! McGraw-Hill, 1999.

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