Herwings, M. (1991). Pronunciation tasks: Course for pre-intermediate learners. Cambridge University Press.
Citace podle Chicago (17th ed.)Herwings, Martin. Pronunciation Tasks: Course for Pre-intermediate Learners. Cambridge: Cambridge University Press, 1991.
Citace podle MLA (9th ed.)Herwings, Martin. Pronunciation Tasks: Course for Pre-intermediate Learners. Cambridge University Press, 1991.
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