Dyfyniad APA

Underhill, A. (2005). Sound foundations: Learning and teaching pronunciation. Oxford: Macmillan.

Dyfyniad Arddull Chicago

Underhill, Adrian. Sound Foundations: Learning and Teaching Pronunciation. Oxford: Macmillan, 2005.

Dyfyniad MLA

Underhill, Adrian. Sound Foundations: Learning and Teaching Pronunciation. Oxford: Macmillan, 2005.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.