Underhill, A. (2005). Sound foundations: Learning and teaching pronunciation (First published.). London: Macmillan.
Citación estilo ChicagoUnderhill, Adrian. Sound Foundations: Learning and Teaching Pronunciation. First published. London: Macmillan, 2005.
Cita MLAUnderhill, Adrian. Sound Foundations: Learning and Teaching Pronunciation. First published. London: Macmillan, 2005.
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