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
"Schaff, Philip","Mediæval Christianity : from Gregory I to Gregory VII, A.D. 590-1073","[5th ed., rev. and enl.]",Charles Scribner's sons,1891,History of the Christian church,,,,https://cir.nii.ac.jp/crid/1130282269868061312