Aberle, W. H. G. (1978). Economic prospects for railways: Report of the thirty-ninth round table on Transport Economics, held in Paris on 19th and 20th October, 1977.. Paris: European Conference of Ministers of Transport.
Style de citation ChicagoAberle, W. Hamm G. Economic Prospects for Railways: Report of the Thirty-ninth Round Table On Transport Economics, Held in Paris On 19th and 20th October, 1977.. Paris: European Conference of Ministers of Transport, 1978.
Style de citation MLAAberle, W. Hamm G. Economic Prospects for Railways: Report of the Thirty-ninth Round Table On Transport Economics, Held in Paris On 19th and 20th October, 1977.. Paris: European Conference of Ministers of Transport, 1978.
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