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 "Posner, Eric A.",Contract law and theory,2nd ed,Wolters Kluwer,2016,Aspen student treatise series,,9781454869511,,https://cir.nii.ac.jp/crid/1130282269969545216