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
"Wagner, Richard and Porter, Andrew",Twilight of the Gods = Götterdämmerung,,"John Calder, 1985,Riverrun Press",1985,Opera guide,,0714540633,,https://cir.nii.ac.jp/crid/1130282269208943232