Lalaleo Pazmiño MJ, Vélez Yanza PA. Changes in pronunciation performance after structured tongue-twister practice among fourth-grade EFL learners in Ambato, Ecuador. RUNAS [Internet]. 2026Sep.28 [cited 2026Oct.17];7(15):e260392. Available from: https://runas.religacion.com/index.php/about/article/view/392