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.","Contract and related obligation : theory, doctrine, and practice",,West Pub. Co.,1987,American casebook series,,0314324933,,https://cir.nii.ac.jp/crid/1130282269715063040