Citazione Stile APA (7a Edizione)

Duckworth M. Michael & Turner R. Rebecca. (2008). Business Result. Upper-Intermediate: Student's Book. New York, Oxford University Press, 2008.

Citazione stile Chigago Style (17a edizione)

Duckworth M. Michael e Turner R. Rebecca. Business Result. Upper-Intermediate: Student's Book. New York, Oxford University Press, 2008, 2008.

Citatione MLA (9a ed.)

Duckworth M. Michael e Turner R. Rebecca. Business Result. Upper-Intermediate: Student's Book. New York, Oxford University Press, 2008, 2008.