Tabor, C. (2006). Natural english: Elementary workbook with key. Oxford: Oxford Univ. Press.
Trích dẫn kiểu ChicagoTabor, Carol. Natural English: Elementary Workbook With Key. Oxford: Oxford Univ. Press, 2006.
Deismireacht MLATabor, Carol. Natural English: Elementary Workbook With Key. Oxford: Oxford Univ. Press, 2006.
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