Citazione Stile APA (7a Edizione)

Biber, D. (1988). Variation across speech and writing. Cambridge University Press.

Citazione stile Chigago Style (17a edizione)

Biber, Douglas. Variation Across Speech and Writing. Cambridge: Cambridge University Press, 1988.

Citatione MLA (9a ed.)

Biber, Douglas. Variation Across Speech and Writing. Cambridge University Press, 1988.