Poverty, inequality, and the future of social policy
Russel Sage Foundation, 1995
 Buku Teks
Triffin, Robert
Gold and the dollar crisis: the future of convertibility / Robert Triffin
Yale University Press, 1961
 Buku Teks
Kuznets, Simon Smith, 1901-
Shares of upper income groups in income and savings
National Bureau of Economic Reserach, 1950
 Buku Teks
Kuznets, Simon Smith, 1901-
Shares of upper income groups in income and saving
National Bureau of Economic Research, 1950
 Buku Teks
Miller, Herman Phillip
Income of the American people
John Wiley & Sons, 1955
 Buku Teks