Valdar, A. R., & Morfett, I. (2015). Understanding telecommunications business. The Institution of Engineering and Technology. https://doi.org/10.1049/PBTE060E
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रValdar, A. R., और Ian Morfett. Understanding Telecommunications Business. London, United Kingdom: The Institution of Engineering and Technology, 2015. https://doi.org/10.1049/PBTE060E.
एमएलए (9वां संस्करण) प्रशस्ति पत्रValdar, A. R., और Ian Morfett. Understanding Telecommunications Business. The Institution of Engineering and Technology, 2015. https://doi.org/10.1049/PBTE060E.
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