Henderson, Alice, Dan Frost, Elina Tergujeff, Alexander Kautzsch, Deirdre Murphy, Anastazija Kirkova-Naskova, Ewa Waniek-Klimczak, David Levey, Una Cunnigham, and Lesley Curnick. 2012. “The English Pronunciation Teaching in Europe Survey: Selected Results”. Research in Language 10 (1):5-27. https://doi.org/10.2478/v10015-011-0047-4.