Underhill, A. (2005). Sound foundations: Learning and teaching pronunciation. Oxford: Macmillan.
Trích dẫn kiểu ChicagoUnderhill, Adrian. Sound Foundations: Learning and Teaching Pronunciation. Oxford: Macmillan, 2005.
MLA CitationUnderhill, Adrian. Sound Foundations: Learning and Teaching Pronunciation. Oxford: Macmillan, 2005.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.