Não informado. (1950). Circuit: Electrical radio and television monthly. Electrical and Radio Federation.
Chicago-referens (17:e uppl.)Não informado. Circuit: Electrical Radio and Television Monthly. Melbourne, Australia: Electrical and Radio Federation, 1950.
MLA-referens (8:e uppl.)Não informado. Circuit: Electrical Radio and Television Monthly. Electrical and Radio Federation, 1950.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.