Dalton, C. (2008). Grammar sense 4: Advanced grammar and writing. Oxford University Press.
Chicago Style aipamenaDalton, Cathrine. Grammar Sense 4: Advanced Grammar and Writing. Oxford University Press, 2008.
MLA aipamenaDalton, Cathrine. Grammar Sense 4: Advanced Grammar and Writing. Oxford University Press, 2008.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.