(1999). Electrical wiring: Cables and conductors. Williams Learning Network.
Lua i Stíl Chicago (17ú heag.)Electrical Wiring: Cables and Conductors. United States: Williams Learning Network, 1999.
Lua MLA (8ú heag.)Electrical Wiring: Cables and Conductors. Williams Learning Network, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.