著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL
,Statement of the Council of Ministers of the German Democratic republic on the conclusion of the treaty between the USSR and the FRG,,Verlag Zeit im Bild,1970,Documents on the policy of the German Democratic Republic,,,,https://cir.nii.ac.jp/crid/1130282270386596352