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 National Education Association of the United States. Research Division,Social security and the changing roles of men and women (A summary) : Retirement Memo 1979-2,,National Education Association,1979,NEA research memo,,,,https://cir.nii.ac.jp/crid/1130000794630080640