Não informado. (1937). Beama journal. British Electrical and Allied Manufacturers Association.
Chicago-referens (17:e uppl.)Não informado. Beama Journal. London: British Electrical and Allied Manufacturers Association, 1937.
MLA-referens (8:e uppl.)Não informado. Beama Journal. British Electrical and Allied Manufacturers Association, 1937.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.