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
"Sylvester II, Pope, d. 1003 and Bernstein, F. W. (Fritz Weigle)",Die Briefsammlung Gerberts von Reims,,H. Böhlaus,1966,Monumenta Germaniae historica,,,,https://cir.nii.ac.jp/crid/1130282269924824832