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 Commission of the European Communities. Directorate General for Competition,Rules applicable to State aid : Situation at 30 June 1998,,Office for Official Publications of the European Communities,1999,Competition law in the European Communities (Situation at 30 June 1998),,9282840085,,https://cir.nii.ac.jp/crid/1130282272549900672