Hewings, M. (1999). Pronunciation plus: Practice through interaction. North American English. Teacher's Manual. Cambridge University Press.
Citace podle Chicago (17th ed.)Hewings, Martin. Pronunciation Plus: Practice Through Interaction. North American English. Teacher's Manual. New York, USA: Cambridge University Press, 1999.
Citace podle MLA (9th ed.)Hewings, Martin. Pronunciation Plus: Practice Through Interaction. North American English. Teacher's Manual. Cambridge University Press, 1999.
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