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
"Christensen, Sandra and United States. Congressional Budget Office",Subsidies under medicare and the potential for disenrollment under a voluntary catastrophic program,,"Congress of the U.S., Congressional Budget Office",1989,Special study,,,,https://cir.nii.ac.jp/crid/1130282270539547904