Delgado Heredia, P. D., & Carrera Moreno, G. W. (2026). Pronunciation difficulties among ecuadorian efl students: causes and classroom solutions. Revista Científica Multidisciplinaria SAPIENTIAE. ISSN: 2600-6030, 9(20), 508–533. https://doi.org/10.56124/sapientiae.v9i20.023