Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
"Wecker, Ingrid",Deutsch 2000 : Graded German Reader,2. Aufl,Max Hueber,1975,Sprachen der Welt,,"3192311800,3192411813",,https://cir.nii.ac.jp/crid/1130000795316612096