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
Germany (East). Volkskammer,"Act on the 1980 National Economic Plan : decision of the People's Chamber of the GDR of 21 December, 1979",,"Panorama DDR,distributed by Verlag Zeit im Bild",1979,Documents on the policy of the German Democratic Republic,,,,https://cir.nii.ac.jp/crid/1130000798191755904