Não informado. (1946). English electric and its people. English Electric Company.
Citação do estilo Chicago (17ª ed.)Não informado. English Electric and Its People. Stanford, Conn: English Electric Company, 1946.
Citação MLA (8ª ed.)Não informado. English Electric and Its People. English Electric Company, 1946.
警告：这些引文格式不一定是100％准确.