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 Robb, Stewart",Tristan und Isolde : copera in three acts,,G. Schirmer,1965,G. Schirmer's collection of opera librettos,,,,https://cir.nii.ac.jp/crid/1130000796523440000