WANG, X. Mandarin listeners’ perception of english vowels: Problems and strategies. Canadian Acoustics, [S. l.], v. 34, n. 4, p. 15–26, 2006. Disponível em: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1852. Acesso em: 4 may. 2026.