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Contreras Jordán RM, Almache Granda GK, Sandoval MJ. Use of WhatsApp to enhance grammar and vocabulary in university english foreign learners. JSR [Internet]. 4 de enero de 2021 [citado 24 de abril de 2024];6(1):29-43. Disponible en: https://revistas.utb.edu.ec/index.php/sr/article/view/929