DERWING, Bruce L.; NEAREY, Terrance M. On the Perceptibility of Sub-phonemic Differences: The Tough-Duck Experiment. Linguistica Atlantica, [S. l.], v. 3, p. 29–40, 1981. Disponível em: https://journals.lib.unb.ca/index.php/la/article/view/32445. Acesso em: 17 mai. 2024.