Não informado. (1946). English electric and its people. English Electric Company.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. English Electric and Its People. Stanford, Conn: English Electric Company, 1946.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. English Electric and Its People. English Electric Company, 1946.
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