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 "O'leary, Síofra",The evolving concept of community citizenship : from the free movement of persons to union citizenship,,Kluwer Law International,1996,European monographs,,"9789041108784,9041108785",,https://cir.nii.ac.jp/crid/1130000796057244416