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 "Pennings, F. (Frans)",Introduction to European social security law,3rd ed,Kluwer Law International,2001,Studies in employment and social policy,,9041116281,,https://cir.nii.ac.jp/crid/1130282268668164480