Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
United States. Bureau of Labor Statistics,"Health-benefit programs established through collective bargaining, 1945",,"Dept. of Labor, Bureau of Labor Statistics,For sale by the Supt. of Docs., U.S. G.P.O.",1945,Bulletin,,,,https://cir.nii.ac.jp/crid/1130000794209545344