Não informado. (1979). Journal of Advanced Transportation. Institute for Transportation.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Journal of Advanced Transportation. Durham, NC: Institute for Transportation, 1979.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Journal of Advanced Transportation. Institute for Transportation, 1979.
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