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
"Heers, Jacques",Family clans in the Middle Ages : a study of political and social structures in urban areas,,North-Holland,1977,Europe in the Middle Ages,,072049009X,,https://cir.nii.ac.jp/crid/1130000795725091200