Não informado. (1963). Bulletin of statistics on world trade in engineering products. United Nations, Economic Commission for Europe.
Chicago (17e ed.) BronvermeldingNão informado. Bulletin of Statistics on World Trade in Engineering Products. New York: United Nations, Economic Commission for Europe, 1963.
MLA (8e ed.) BronvermeldingNão informado. Bulletin of Statistics on World Trade in Engineering Products. United Nations, Economic Commission for Europe, 1963.
Let op: Deze citaties zijn niet altijd 100% accuraat.