Não informado. (1981). Balance of Payments Statistics Yearbook. International Monetary Fund.
Style de citation Chicago (17e éd.)Não informado. Balance of Payments Statistics Yearbook. Washington: International Monetary Fund, 1981.
Style de citation MLA (8e éd.)Não informado. Balance of Payments Statistics Yearbook. International Monetary Fund, 1981.
Attention : ces citations peuvent ne pas être correctes à 100%.