(1969). Socio-economic progress in Latin America: Social progress, trust fund, ninth annual report, 1969. Washington, D.C: Inter-American Development Bank.
Παραπομπή Chicago StyleSocio-economic Progress in Latin America: Social Progress, Trust Fund, Ninth Annual Report, 1969. Washington, D.C: Inter-American Development Bank, 1969.
Παραπομπή MLASocio-economic Progress in Latin America: Social Progress, Trust Fund, Ninth Annual Report, 1969. Washington, D.C: Inter-American Development Bank, 1969.
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