Ciruela Castillo, C. “The Acquisition of English by Immigrant School Learners in Catalonia: Affective Variables and Cross Linguistic Influence”. Anuari De Filologia. Estudis De Lingüística, vol. 5, Dec. 2015, pp. 163-5, https://revistes.ub.edu/index.php/AFEL/article/view/14886.