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
"Ryan, John Joseph and Kuttner, Stephan",Saint Peter Damiani and his canonical sources : a preliminary study in the antecedents of the Gregorian reform,,[Pontifical Institute of Mediaeval Studies],1956,Studies and texts,,,,https://cir.nii.ac.jp/crid/1130282271756394240