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