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. Congress. Joint Economic Committee,"The underclass : hearing before the Joint Economic Committee, Congress of the United States, One Hundred First Congress, first session, May 25, 1989",,"U.S. G.P.O. : For sale by the Supt. of Docs., Congressional Sales Office, U.S. G.P.O.",1989,S. hrg.,,,,https://cir.nii.ac.jp/crid/1130000794669366912