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 United States. Congress. Office of Technology Assessment,Nonferrous metals : industry structure,,"Congress of the U.S., Office fo Technology Assessment,For sale by the Supt., of Docs., U.S. G.P.O.",1990,Background paper,,,,https://cir.nii.ac.jp/crid/1130282272522967168