Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
"Hartmann, von Aue, 12th cent. and Leitzmann, Albert and Wolff, Ludwig",Erec,"4. Aufl., besogt con Ludwig Wolff",Max Niemeyer,1967,Altdeutsche Textbibliothek,,,,https://cir.nii.ac.jp/crid/1130282270589274880