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
"Dante Alighieri and Singleton, Charles Southward",Purgatorio,,Princeton University Press,1991,Bollingen series,,9780691019109,,https://cir.nii.ac.jp/crid/1130287893242575238