James, E. (1992). Income security for old age: Conceptual background and major issues. Country Economics Department, World Bank.
Cita Chicago (17th ed.)James, Estelle. Income Security for Old Age: Conceptual Background and Major Issues. Washington, D.C: Country Economics Department, World Bank, 1992.
Cita MLA (9th ed.)James, Estelle. Income Security for Old Age: Conceptual Background and Major Issues. Country Economics Department, World Bank, 1992.
Atenció: Aquestes cites poden no estar 100% correctes.