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
"Lees, Beatrice A.",The central period of the middle age 918-1273,5th ed,Methuen,1922,Six ages of European history from A. D. 476 to 1878,,,,https://cir.nii.ac.jp/crid/1130282273066242432