(1980). Bulletin of statistics on world trade in engineering products 1978. United Nations.
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Citação norma Chicago
Bulletin of Statistics on World Trade in Engineering Products 1978. New York: United Nations, 1980.
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Citação norma MLA
Bulletin of Statistics on World Trade in Engineering Products 1978. United Nations, 1980.
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Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.