KUO, Yihsiang. A Pilot Study of the Achievement of English Pronunciation Of Mandarin Speakers: Children vs. Teenagers. Kansas Working Papers in Linguistics, [S. l.], v. 23, p. 53–62, 1998. DOI: 10.17161/KWPL.1808.347. Disponível em: https://journals.ku.edu/kwpl/article/view/17245.. Acesso em: 30 apr. 2024.