Não informado. (2019). Statistical Yearbook. United Nations, Department of International Economic.
Chicago Style (17th ed.) CitationNão informado. Statistical Yearbook. New York: United Nations, Department of International Economic, 2019.
MLA (8th ed.) CitationNão informado. Statistical Yearbook. United Nations, Department of International Economic, 2019.
Warning: These citations may not always be 100% accurate.