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
"Eastman, John R.",Papal abdication in later medieval thought,,E. Mellen Press,1990,Texts and studies in religion,,0889468311,,https://cir.nii.ac.jp/crid/1130282272171691392