(2012). IBRD and IDA financial statements: Income by region, lending data. World Bank.
Cita Chicago (17th ed.)IBRD and IDA Financial Statements: Income by Region, Lending Data. Washington, D.C: World Bank, 2012.
Cita MLA (9th ed.)IBRD and IDA Financial Statements: Income by Region, Lending Data. World Bank, 2012.
Atenció: Aquestes cites poden no estar 100% correctes.