Calles-Jiménez, Romel Francisco, Diana Casandra Paredes-Peralta, Carlos Alberto Aguirre-Alarcón, and María Eugenia Camacho-Oleas. “Communicative Activities in the Development of Oral Competence in Ecuadorian Students Compared to the Cambridge Key Exam”. Revista de Ciencias Sociales 30 (June 21, 2024): 19-34. Accessed June 18, 2025. https://mail.produccioncientificaluz.org/index.php/rcs/article/view/42245.