GUPTA, B. G. (2014). Highway and bridge engineering. Standard Publishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGUPTA, B.L. Gupta. Highway and Bridge Engineering. Standard Publishers, 2014.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGUPTA, B.L. Gupta. Highway and Bridge Engineering. Standard Publishers, 2014.
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