APA (7th ed.) Citation

Tabor C. Carol. (2006). Natural English. Elementary: Workbook with key. New York, Oxford University Press, 2006.

Chicago Style (17th ed.) Citation

Tabor C. Carol. Natural English. Elementary: Workbook with Key. New York, Oxford University Press, 2006, 2006.

MLA (9th ed.) Citation

Tabor C. Carol. Natural English. Elementary: Workbook with Key. New York, Oxford University Press, 2006, 2006.

Warning: These citations may not always be 100% accurate.