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. Bureau of Labor Statistics,Technology and its effect on labor in the steel industry,,"U.S. Dept. of Labor, Bureau of Labor Statisticsu : For sale by the U.S. G.P.O., Supt. of Docs.",1994,Bulletin,,0160450357,,https://cir.nii.ac.jp/crid/1130282269033012864