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
"Collins, Roger","Early medieval Spain : unity in diversity, 400-1000",2nd ed,Macmillan,1995,New studies in medieval history,,"0333641701,033364171X",,https://cir.nii.ac.jp/crid/1130000793811439872