Não informado. (2001). Bibliography. National Research Council, Transportation Research Board.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Bibliography. Washington: National Research Council, Transportation Research Board, 2001.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Bibliography. National Research Council, Transportation Research Board, 2001.
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