Citazione Stile APA (7a Edizione)

Tabor C. Carol. (2006). Natural English. Elementary: Test booklet. New York, Oxford University Press, 2006.

Citazione stile Chigago Style (17a edizione)

Tabor C. Carol. Natural English. Elementary: Test Booklet. New York, Oxford University Press, 2006, 2006.

Citatione MLA (9a ed.)

Tabor C. Carol. Natural English. Elementary: Test Booklet. New York, Oxford University Press, 2006, 2006.