Citazione Stile APA (7a Edizione)

Wren, W., & Lindsay, S. (2019). Cambridge Grammar And Writing Skills Learner's Book 6 (1st.). Cambridge University Press.

Citazione stile Chigago Style (17a edizione)

Wren, Wendy, e Sarah Lindsay. Cambridge Grammar And Writing Skills Learner's Book 6. 1st. UK: Cambridge University Press, 2019.

Citatione MLA (9a ed.)

Wren, Wendy, e Sarah Lindsay. Cambridge Grammar And Writing Skills Learner's Book 6. 1st. Cambridge University Press, 2019.