著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL Round Table on Transport Economics and European Conference of Ministers of Transport. Economic Research Centre,The benefits and costs (at the national level) of government intervention in the normal process of setting freight transport prices,,European Conference of Ministers of Transport,1974,Report of the Round Table on Transport Economics,,9282110192,,https://cir.nii.ac.jp/crid/1130282270542714240