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,Possibilities and limitations of combined transport,,European Conference of Ministers of Transport,1993,Report of the Round Table on Transport Economics,,9282111830,,https://cir.nii.ac.jp/crid/1130282269135605120