Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
"Erichsen, Hans-Uwe and Martens, Wolfgang and Badura, Peter",Allgemeines Verwaltungsrecht,,W. De Gruyter,1975,De Gruyter Lehrbuch,,3110049015,,https://cir.nii.ac.jp/crid/1130282270235735808