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 the Census,"Annual mean income, lifetime income, and educational attainment of men in the United States, for selected years, 1956 to 1972",[Microfiche ed.],Congressional Information Service,1974,Current population reports,,,,https://cir.nii.ac.jp/crid/1130000794384996224