Halsall, F. Introduction to data communications and computer networks.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHalsall, Fred. Introduction to Data Communications and Computer Networks. 1985.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHalsall, Fred. Introduction to Data Communications and Computer Networks.
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