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,"Paid vacation provisions in major union contracts, 1957",,"U.S. Dept. of Labor, Bureau of Labor Statistics,For sale by the Supt. of Docs., U.S. Govt. Print. Off.",1958,Bulletin,,,,https://cir.nii.ac.jp/crid/1130000794402116224