Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
"Bitter, Georg and Röder, Sebastian","BGB, Allgemeiner Teil","4., neu bearbeitete Aufl",Verlag Franz Vahlen,2018,Vahlen Jura,,9783800657803,,https://cir.nii.ac.jp/crid/1130000796817677952