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 "Summers, Robert S. and Hillman, Robert A. and Hoffman, David A.","Contract and related obligation : theory, doctrine, and practice",8th ed,West Academic Pub.,2021,American casebook series,,9781684670154,,https://cir.nii.ac.jp/crid/1130571620399171332