SILVA, A. M. da . (2020) “The affective filter in the mandatory and optional classes: an experience in Spanish teaching in a professionalizing context ”, Revista CBTecLE, 4(2), pp. 127–144. vailable at: https://revista.cbtecle.com.br/index.php/CBTecLE/article/view/300 (ccessed: 3 July 2024).