Lyn Scott. (2003). Natural english (upper-intermediate workbook with key). Oxford, NY: Oxford Univ. Press.
Trích dẫn kiểu ChicagoLyn Scott. Natural English (upper-intermediate Workbook With Key). Oxford, NY: Oxford Univ. Press, 2003.
MLA引文Lyn Scott. Natural English (upper-intermediate Workbook With Key). Oxford, NY: Oxford Univ. Press, 2003.
警告:这些引文格式不一定是100%准确.