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
"Heer, Friedrich and Sondheimer, Janet",The medieval world : Europe 1100-1350,,Cardinal,1974,History of civilization,,0351166823,,https://cir.nii.ac.jp/crid/1130282271445821568