Herwings, M. (1991). Pronunciation tasks: Course for pre-intermediate learners. Cambridge University Press.
Chicago-referens (17:e uppl.)Herwings, Martin. Pronunciation Tasks: Course for Pre-intermediate Learners. Cambridge: Cambridge University Press, 1991.
MLA-referens (9:e uppl.)Herwings, Martin. Pronunciation Tasks: Course for Pre-intermediate Learners. Cambridge University Press, 1991.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.