Johnson, D. (1999). Upgrading & repairing your PC answers! McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Johnson, Dave. Upgrading & Repairing Your PC Answers! McGraw-Hill, 1999.
Lua MLA (8ú heag.)Johnson, Dave. Upgrading & Repairing Your PC Answers! McGraw-Hill, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.