Smyth, A. M., N. García Manzanares, and J. J. Fernández Muñoz. “Anxiety and Personality As Indicators of Academic Performance in University Foreign Language Classrooms”. Porta Linguarum An International Journal of Foreign Language Teaching and Learning, no. 36, June 2021, pp. 27-42, doi:10.30827/portalin.vi36.15376.