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
"International Association of Governmental Labor Officials. Convention (51st : 1968 : Philadelphia, Pa.)","Labor laws and their administration : proceedings--51st convention of the International Association of Governmental Labor Officials, Philadelphia, Pa., July 22-26, 1968",,"U.S. Dept. of Labor, Bureau of labor Standards",1969,Bulletin,,,,https://cir.nii.ac.jp/crid/1130282272995533824