Hewings, M. (1993). Pronunciation tasks: A course for pre-intermediate learners. Cambridge University Press.
Chicago Style aipamenaHewings, Martin. Pronunciation Tasks: A Course for Pre-intermediate Learners. United Kingdom: Cambridge University Press, 1993.
MLA aipamenaHewings, Martin. Pronunciation Tasks: A Course for Pre-intermediate Learners. Cambridge University Press, 1993.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.