Here are some references that Victor recommends: Edwards, Emily. “Action Research in Action” English Teaching Professional, Issue 94, Sept. 2014, pp. 52-54. Hancock, Mark. “ELF: Beyond Dogma and Denial.” Speak Out! - Journal of the IATEFL Pronunciation Special Interest Group, Issue 60, Feb. 2019, pp. 15-22. Ishikawa, Tomokazu, and Jenkins, Jennifer. “What is ELF? Introductory questions and answers for ELT professionals”. Center for English as a Lingua Franca Journal 5. 2019, pp. 1-10. Jenkins, Jennifer. “Teaching pronunciation for English as a Lingua Franca: a sociopolitical perspective”. 2005. In C. Gnutzmann, & F. Intemann (Eds.), The Globalisation of English and the English Language Classroom (pp. 145-158). Göttingen, Germany; Tübingen, Germany: Gunter Narr. Kelly, Gerald. How to Teach Pronunciation. Pearson Education Limited, 2002. Levis, John M. “Cinderella No More: Leaving Victimhood Behind”. Speak Out! - Journal of the IATEFL Pronunciation Special Interest Group, Issue 60, Feb. 2019, pp. 7-14. Levis, John M., and Anne Wichmann. “English Intonation - Form and Meaning”. The Handbook of English Pronunciation, 2015, pp. 139–156., doi:10.1002/9781118346952.ch8. Levis, John M., and Shannon McCrocklin. “Effective and reflective teaching of pronunciation”. Issues in Syllabus Design, Koninklijke Brill NV, Linden, 2018, pp. 77-89 doi:10.1163/9789004380882_007 Munro, Murray J., and Tracey M. Derwing. “Intelligibility in Research and Practice.” The Handbook of English Pronunciation, 2015, pp. 375–396., doi:10.1002/9781118346952.ch21. Reed, Marnie, and Christina Michaud. “Intonation in Research and Practice: The Importance of Metacognition.” The Handbook of English Pronunciation, 2015, pp. 454–470., doi:10.1002/9781118346952.ch25. Underhill, Adrian. Sound Foundations: Learning and Teaching Pronunciation. Macmillan, 2005. Walker, Robin. “Accent, accommodation and intelligibility in ELF”. Modern English Teacher. 26 (4), 2017a. Walker, Robin. “From being intelligible to being themselves: pronunciation for today”. Modern English Teacher. 28 (3) 64-67, 2017b. Walker, Robin. “International Intelligibility” English Teaching Professional, 21, 2001, pp. 10-13. Wells, John C. English Intonation - An Introduction. Cambridge University Press, 2006. Wells, John C. “Goals in Teaching English Pronunciation” English Pronunciation Models: A Changing Scene, 2005.