Não informado. (1963). Electric power. British Electrical and Allied Manufacturers Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Electric Power. London: British Electrical and Allied Manufacturers Association, 1963.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Electric Power. British Electrical and Allied Manufacturers Association, 1963.
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