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 Great Britain. Employment Dept. Group and Great Britain. Office of Population Censuses and Surveys,"Structure and definition of major, minor, and unit groups",1st ed,HMSO,1990,Standard occupational classification,,"0116912847,0116912847",,https://cir.nii.ac.jp/crid/1130000797767014784