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 "Stoph, Willi","On the talks between Willi Stoph, Chairman of the Council of Ministers of the GDR, and Willy Brandt, Federal Chancellor of the FRG, in Erfurt",,Verlag zeit im Bild,1970,Documents on the policy of the German Democratic Republic,,,,https://cir.nii.ac.jp/crid/1130282272406447616