Citazione Stile APA (7a Edizione)

Hopkins D. Diana & Cullen P. Pauline. (2010). Cambridge Grammar for IELTS with answers: Self-study grammar reference and practice (7th ed.). Cambridge, Cambridge University Press, 2010.

Citazione stile Chigago Style (17a edizione)

Hopkins D. Diana e Cullen P. Pauline. Cambridge Grammar for IELTS with Answers: Self-study Grammar Reference and Practice. 7th ed. Cambridge, Cambridge University Press, 2010, 2010.

Citatione MLA (9a ed.)

Hopkins D. Diana e Cullen P. Pauline. Cambridge Grammar for IELTS with Answers: Self-study Grammar Reference and Practice. 7th ed. Cambridge, Cambridge University Press, 2010, 2010.