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,Employer costs for employee compensation,,"U.S. Dept. of Labor, Bureau of Labor Statistics",1998,Bulletin,,"0160497442,0160498821,0160503493",,https://cir.nii.ac.jp/crid/1130282269817761920