Scott L. Lyn & Scott D. David. (2009). Natural English. Pre-intermediate: Workbook. New York, Oxford University Press, 2009.
Chicago Style (17th ed.) CitationScott L. Lyn and Scott D. David. Natural English. Pre-intermediate: Workbook. New York, Oxford University Press, 2009, 2009.
MLA (9th ed.) CitationScott L. Lyn and Scott D. David. Natural English. Pre-intermediate: Workbook. New York, Oxford University Press, 2009, 2009.
Warning: These citations may not always be 100% accurate.