de Oliveira Pereira, Livya Lea. “The Implementation of the Cearenses Language Centers and the Perceptions on Spanish/LS”. Signo & Seña0, no. 35 (July 1, 2019): 172-193. Accessed July 15, 2025. http://revistascientificas.filo.uba.ar/index.php/sys/article/view/6943.