LIPIŃSKA, Dorota. Production of L3 Vowels: Is it Possible to Separate Them From L1 and L2 Sounds?. Research in Language, [S. l.], v. 13, n. 1, p. 77–92, 2015. DOI: 10.1515/rela-2015-0011. Disponível em: https://czasopisma.uni.lodz.pl/research/article/view/2079. Acesso em: 22 jul. 2024.