(1983). Wegiel na rynku swiatowym. Vyd. Ekon.
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Citação norma Chicago
Wegiel Na Rynku Swiatowym. Warszawa: Vyd. Ekon, 1983.
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Citação norma MLA
Wegiel Na Rynku Swiatowym. Vyd. Ekon, 1983.
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Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.