Citazione Stile APA (7a Edizione)

Quintana, J. (2013). Key for Schools Result: Cambridge english. Oxford University Press.

Citazione stile Chigago Style (17a edizione)

Quintana, Jenny. Key for Schools Result: Cambridge English. Oxford: Oxford University Press, 2013.

Citatione MLA (9a ed.)

Quintana, Jenny. Key for Schools Result: Cambridge English. Oxford University Press, 2013.