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
"Cummian, Saint and Walsh, Maura and Ó Cróinín, Dáibhí",Cummian's letter De controversia Paschali,,Pontifical Institute of Mediaeval Studies,1988,Studies and texts,,0888440863,,https://cir.nii.ac.jp/crid/1130000795689625856