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 "Bury, J. B. (John Bagnell) and Gwatkin, Henry Melvill and Whitney, J. P.",The Christian Roman Empire and the foundation of the Teutonic kingdoms,,At the University Press,1911,The Cambridge medieval history,,,,https://cir.nii.ac.jp/crid/1130282269512502016