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 Library of Congress. Congressional Research Service and United States. Congressional Budget Office and United States. Congress. House. Committee on Ways and Means,"Retirement income for an aging population, August 1987",,William S. Hein,1991,Congressional Budget Office publications,,,,https://cir.nii.ac.jp/crid/1130000795149865344