Design Council. (2019). Engineering. Design Council.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDesign Council. Engineering. London: Design Council, 2019.
एमएलए (8वां संस्करण) प्रशस्ति पत्रDesign Council. Engineering. Design Council, 2019.
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