Não informado. (2019). Statistical Yearbook. United Nations, Department of International Economic.
Citação do estilo Chicago (17ª ed.)Não informado. Statistical Yearbook. New York: United Nations, Department of International Economic, 2019.
Citação MLA (8ª ed.)Não informado. Statistical Yearbook. United Nations, Department of International Economic, 2019.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.