Citazione Stile APA (7a Edizione)

Clementson T. Theresa. (2005). Natural English. Reading Writing Skills. Pre-intermediate resource book. New York, Oxford University Press, 2005.

Citazione stile Chigago Style (17a edizione)

Clementson T. Theresa. Natural English. Reading Writing Skills. Pre-intermediate Resource Book. New York, Oxford University Press, 2005, 2005.

Citatione MLA (9a ed.)

Clementson T. Theresa. Natural English. Reading Writing Skills. Pre-intermediate Resource Book. New York, Oxford University Press, 2005, 2005.