Beckmann, M. (1955). Studies in the economics of transportation. Published for the Cowles Commission for Research in Economics by Yale University Press.
Citace podle Chicago (17th ed.)Beckmann, Martin. Studies in the Economics of Transportation. New Haven: Published for the Cowles Commission for Research in Economics by Yale University Press, 1955.
Citace podle MLA (9th ed.)Beckmann, Martin. Studies in the Economics of Transportation. Published for the Cowles Commission for Research in Economics by Yale University Press, 1955.
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