Hewings, M. (1993). Pronunciation tasks: A course for pre-intermediate studients. Teacher's Book. Cambridge University Press.
Chicago-viite (17. p.)Hewings, Martin. Pronunciation Tasks: A Course for Pre-intermediate Studients. Teacher's Book. Nueva York: Cambridge University Press, 1993.
MLA-viite (9. p.)Hewings, Martin. Pronunciation Tasks: A Course for Pre-intermediate Studients. Teacher's Book. Cambridge University Press, 1993.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.