Oye, Rotimi, and Katherine Salvador-Cisneros. “Improving Oral Communication Skills of English Learners With Voice Messages and Short Videos”. Revista Tecnológica - ESPOL 34, no. 2 (June 30, 2022): 155–164. Accessed November 28, 2025. https://www.rte.espol.edu.ec/index.php/tecnologica/article/view/888.