International Monetary Fund. Statistics Dept. (1968). International Financial Statistics: International Financial Statistics, December 1968. International Monetary Fund.
Cita Chicago (17th ed.)International Monetary Fund. Statistics Dept. International Financial Statistics: International Financial Statistics, December 1968. Washington, D.C.: International Monetary Fund, 1968.
Cita MLA (8th ed.)International Monetary Fund. Statistics Dept. International Financial Statistics: International Financial Statistics, December 1968. International Monetary Fund, 1968.
Atenció: Aquestes cites poden no estar 100% correctes.