Schweiger, C. L. (2006). Methods of rider communication. Transportation Research Board.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSchweiger, Carol L. Methods of Rider Communication. Washington, D.C: Transportation Research Board, 2006.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSchweiger, Carol L. Methods of Rider Communication. Transportation Research Board, 2006.
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