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
"Fletcher, R. A. (Richard A.)",The episcopate in the kingdom of León in the twelfth century,,Oxford University Press,1978,Oxford historical monographs,,0198218699,,https://cir.nii.ac.jp/crid/1130282269722817536