Pratt, R. H. (1991). Collection and application of ridership data on rapid transit systems. Transportation Research Board, National Research Council.
Citace podle Chicago (17th ed.)Pratt, Richard H. Collection and Application of Ridership Data on Rapid Transit Systems. Washington, D.C: Transportation Research Board, National Research Council, 1991.
Citace podle MLA (9th ed.)Pratt, Richard H. Collection and Application of Ridership Data on Rapid Transit Systems. Transportation Research Board, National Research Council, 1991.
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