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
"Hagen, Jürgen von and Widgren, Mika",Regionalism in Europe : geometries and strategies after 2000,,Kluwer Academic Publishers,2001,ZEI studies in European economics and law,,0792373537,,https://cir.nii.ac.jp/crid/1130282271789821568