National Research Council. (1992). Traffic operations. Washington, DC : National Academy Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNational Research Council. Traffic Operations. Washington, DC : National Academy Press, 1992.
एमएलए (9वां संस्करण) प्रशस्ति पत्रNational Research Council. Traffic Operations. Washington, DC : National Academy Press, 1992.
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