Não informado. (1959). Japan Telecommunications Review. Japan Telegraph and Telephone Public Corporation.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Japan Telecommunications Review. Tokyo: Japan Telegraph and Telephone Public Corporation, 1959.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Japan Telecommunications Review. Japan Telegraph and Telephone Public Corporation, 1959.
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