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 and United States. Bureau of Labor Statistics. Division of Wages, Hours, and Working Conditions","Wages, hours, and working conditions in the bread-baking industry, 1934",,"U.S. G.P.O.,For sale by the Supt. of Docs., U.S. G.P.O.",1937,Bulletin,,,,https://cir.nii.ac.jp/crid/1130282268815399424