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,"Laws relating to employment agencies in the United States as of January 1, 1933",,"U.S. G.P.O.,For sale by the Supt. of Docs., U.S. G.P.O.",1933,Bulletin,,,,https://cir.nii.ac.jp/crid/1130282271115756672