Não informado. (2021). Communications/engineering Digest. Society of Cable Television Engineers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Communications/engineering Digest. Denver, Colo: Society of Cable Television Engineers, 2021.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Communications/engineering Digest. Society of Cable Television Engineers, 2021.
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