APA aipamena

Tabor C. Carol. (2010). Natural English. Elementary: Workbook. New York, Oxford University Press, 2010.

Chicago Style aipamena

Tabor C. Carol. Natural English. Elementary: Workbook. New York, Oxford University Press, 2010, 2010.

MLA aipamena

Tabor C. Carol. Natural English. Elementary: Workbook. New York, Oxford University Press, 2010, 2010.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.