Keen, M. (2007). VAT, Tariffs, and Withholding: Border Taxes and Informality in Developing Countries. International Monetary Fund.
Citace podle Chicago (17th ed.)Keen, Michael. VAT, Tariffs, and Withholding: Border Taxes and Informality in Developing Countries. Washington, D.C.: International Monetary Fund, 2007.
Citace podle MLA (8th ed.)Keen, Michael. VAT, Tariffs, and Withholding: Border Taxes and Informality in Developing Countries. International Monetary Fund, 2007.
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