Council of State Governments. (1950). Highway safety. Motor truck regulation. s.n.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCouncil of State Governments. Highway Safety. Motor Truck Regulation. Chicago: s.n, 1950.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCouncil of State Governments. Highway Safety. Motor Truck Regulation. s.n, 1950.
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