National Research Council (U.S.). Transportation Research Board. (1974). Special report. Transportation Research Board, National Research Council.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNational Research Council (U.S.). Transportation Research Board. Special Report. Washington: Transportation Research Board, National Research Council, 1974.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNational Research Council (U.S.). Transportation Research Board. Special Report. Transportation Research Board, National Research Council, 1974.
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