GUIMARÃES, Cayley; MAESTRI, Rita Cassia. Non-Manual Expression – Sign Language as L2. International Journal for Innovation Education and Research, Dhaka, Bangladesh, v. 6, n. 10, p. 101–111, 2018. DOI: 10.31686/ijier.vol6.iss10.1169. Disponível em: https://scholarsjournal.net/index.php/ijier/article/view/1169. Acesso em: 29 jul. 2025.