Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
United States. Bureau of Labor Statistics,"Labor laws and their administration 1938 : proceedings of the twenty-fourth convention of the International Association of Governmental Labor Officials, Charleston, S.C., September 1938",,U.S. Government Printing Office,1939,Bulletin,,,,https://cir.nii.ac.jp/crid/1130282270376293248