Não informado. Electrical developments. General Electric, National Lamp Works, Lamp Department.
Čikaški stil citiranja (17. izdanje)Não informado. Electrical Developments. New York: General Electric, National Lamp Works, Lamp Department.
MLA način citiranja (8. izdanje)Não informado. Electrical Developments. General Electric, National Lamp Works, Lamp Department.
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