Held, G. (1998). Dictionary of communications technology: Terms, definitions and abbreviations (3rd ed.). Wiley.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHeld, Gilbert. Dictionary of Communications Technology: Terms, Definitions and Abbreviations. 3rd ed. Chichester: Wiley, 1998.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHeld, Gilbert. Dictionary of Communications Technology: Terms, Definitions and Abbreviations. 3rd ed. Wiley, 1998.
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