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
"Christiansen, Eric","The Northern Crusades : the Baltic and the Catholic frontier, 1100-1525",,Macmillan,1980,New studies in medieval history,,"0333262433,0333263952",,https://cir.nii.ac.jp/crid/1130282271483894784