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
"Graus, František and Barraclough, Geoffrey",Eastern and Western Europe in the Middle Ages,,Thames & Hudson,1970,Library of European civilization,,"0500320187,0500330182",,https://cir.nii.ac.jp/crid/1130000796880629632