Calderón, P. y Chancay Cedeño, C.H. 2023. The use of pictorial devices to improve english idioms elucidation among efl seventh-grade students. UNESUM - Ciencias. Revista Científica Multidisciplinaria. 7, 3 (dic. 2023), 50–59. DOI:https://doi.org/10.47230/unesum-ciencias.v7.n3.2023.50-59.