Edison Electric Institute. Rural Sales Committee & National Electric Light Association. Rural Sales Bureau. Rural electrification exchange. Edison Electric Institute.
Chicago-referens (17:e uppl.)Edison Electric Institute. Rural Sales Committee och National Electric Light Association. Rural Sales Bureau. Rural Electrification Exchange. New York: Edison Electric Institute.
MLA-referens (8:e uppl.)Edison Electric Institute. Rural Sales Committee och National Electric Light Association. Rural Sales Bureau. Rural Electrification Exchange. Edison Electric Institute.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.