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
"Petersen, Joan M. (Joan Margaret)",The Dialogues of Gregory the Great in their late antique cultural background,,Pontifical Institute of Mediaeval Studies,1984,Studies and texts,,0888440693,,https://cir.nii.ac.jp/crid/1130000796037775104