Não informado. (1901). Electrical Industries Export. Continental and Overseas Organizations.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Electrical Industries Export. London: Continental and Overseas Organizations, 1901.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Electrical Industries Export. Continental and Overseas Organizations, 1901.
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