Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL "Hartmann, von Aue, 12th cent. and Keller, Thomas L.",Klagebüchlein,,Kümmerle,1986,Göppinger Arbeiten zur Germanistik,,3874526852,,https://cir.nii.ac.jp/crid/1130000796064102528