Não informado. (1994). IEEE Personal Communications. Institute of Electrical and Electronics Engineers Communications Society.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. IEEE Personal Communications. New York: Institute of Electrical and Electronics Engineers Communications Society, 1994.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. IEEE Personal Communications. Institute of Electrical and Electronics Engineers Communications Society, 1994.
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