O'Connell, S. (1993). Focus on First Certificate (New Edition.). Thomas Nelson and Sons.
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Citação norma Chicago
O'Connell, Sue. Focus on First Certificate. New Edition. London: Thomas Nelson and Sons, 1993.
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Citação norma MLA
O'Connell, Sue. Focus on First Certificate. New Edition. Thomas Nelson and Sons, 1993.
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Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.