Citazione Stile APA (7a Edizione)

Hughes J. John. (2008). ProFile 2: Intermediate. Teacher's Book. New York, Oxford University Press, 2008.

Citazione stile Chigago Style (17a edizione)

Hughes J. John. ProFile 2: Intermediate. Teacher's Book. New York, Oxford University Press, 2008, 2008.

Citatione MLA (9a ed.)

Hughes J. John. ProFile 2: Intermediate. Teacher's Book. New York, Oxford University Press, 2008, 2008.