Underhill, A. (2005). Sound foundations: Learning and teaching pronunciation. Oxford: Macmillan.
Stile di citazione ChicagoUnderhill, Adrian. Sound Foundations: Learning and Teaching Pronunciation. Oxford: Macmillan, 2005.
Citazione MLAUnderhill, Adrian. Sound Foundations: Learning and Teaching Pronunciation. Oxford: Macmillan, 2005.
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