National Research Council (U.S.). Transportation Research Board. (1989). Safety factors related to high-speed rail passenger systems. Transportation Research Board, National Research Council.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNational Research Council (U.S.). Transportation Research Board. Safety Factors Related to High-speed Rail Passenger Systems. Washington, D.C: Transportation Research Board, National Research Council, 1989.
एमएलए (9वां संस्करण) प्रशस्ति पत्रNational Research Council (U.S.). Transportation Research Board. Safety Factors Related to High-speed Rail Passenger Systems. Transportation Research Board, National Research Council, 1989.
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