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
"Bennett, Matthew and Weikert, Katherine","Medieval hostageship, c. 700-c. 1500 : hostage, captive, prisoner of war, guarantee, peacemaker",,Routledge,2017,Routledge research in medieval studies,,9781138690042,,https://cir.nii.ac.jp/crid/1130282272274903040