Não informado. Electrical developments. General Electric, National Lamp Works, Lamp Department.
Chicago-Zitierstil (17. Ausg.)Não informado. Electrical Developments. New York: General Electric, National Lamp Works, Lamp Department.
MLA-Zitierstil (8. Ausg.)Não informado. Electrical Developments. General Electric, National Lamp Works, Lamp Department.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.