Não informado. (1961). International financial statistics. International Monetary Fund.
Chicago (17e ed.) BronvermeldingNão informado. International Financial Statistics. Washington: International Monetary Fund, 1961.
MLA (8e ed.) BronvermeldingNão informado. International Financial Statistics. International Monetary Fund, 1961.
Let op: Deze citaties zijn niet altijd 100% accuraat.