International Monetary Fund, Bureau of Statistics. (1964). Direction of Trade. International Monetary Fund.
Citação do estilo Chicago (17ª ed.)International Monetary Fund, Bureau of Statistics. Direction of Trade. Washington: International Monetary Fund, 1964.
Citação MLA (8ª ed.)International Monetary Fund, Bureau of Statistics. Direction of Trade. International Monetary Fund, 1964.
警告：这些引文格式不一定是100％准确.