World Touring and Automobile Organisation. (1978). Traffic engineering and control. Printerhall.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWorld Touring and Automobile Organisation. Traffic Engineering and Control. London: Printerhall, 1978.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWorld Touring and Automobile Organisation. Traffic Engineering and Control. Printerhall, 1978.
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