General Electric Company. Lamp Development Laboratory. Abstract bulletin of Lamp Development Laboratory, Lamp Department of General Electric Company, Nela Park. The Laboratory.
Lua i Stíl Chicago (17ú heag.)General Electric Company. Lamp Development Laboratory. Abstract Bulletin of Lamp Development Laboratory, Lamp Department of General Electric Company, Nela Park. Cleveland: The Laboratory.
Lua MLA (8ú heag.)General Electric Company. Lamp Development Laboratory. Abstract Bulletin of Lamp Development Laboratory, Lamp Department of General Electric Company, Nela Park. The Laboratory.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.