Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
"United States. Social Security Administration. Office of Research and Statistics and Kassalow, E. (Everett)",The role of social security in economic development,,"U.S. Dept. of Health, Education, and Welfare, Social Security Administration, Office of Research and Statistics,For sale by the Supt. of Docs., U.S. Govt. Print. Off.",1968,Research report (United States. Social Security Administration. Office of Research and Statistics),,,,https://cir.nii.ac.jp/crid/1130282270118816256