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,"Collective bargaining agreements in the Federal service, late 1971",,"U.S. Dept. of Labor, Bureau of Labor Statistics,For sale by the Supt. of Docs., U.S. Govt. Print. Off.",1973,Bulletin,,,,https://cir.nii.ac.jp/crid/1130000796972589184