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Dyfyniad Arddull ChicagoFJCandN, United States. Federal Transit Administration, Transit Cooperative Research Program, Transit Development Corporation, National Research Council (U.S.). Transportation Research Board, and Wirthlin Worldwide. Enhancing the Visibility and Image of Transit in the United States and Canada. Washington, D.C: National Academy Press, 2000.
Dyfyniad MLAFJCandN, et al. Enhancing the Visibility and Image of Transit in the United States and Canada. National Academy Press, 2000.