Citazione Stile APA (7a Edizione)

Gower, R. (2006). Grammar in practice 6 (First edition.). Cambridge University Press.

Citazione stile Chigago Style (17a edizione)

Gower, Roger. Grammar in Practice 6. First edition. Cambridge: Cambridge University Press, 2006.

Citatione MLA (9a ed.)

Gower, Roger. Grammar in Practice 6. First edition. Cambridge University Press, 2006.