Delgado-Mero, E., Vera-Hoppe, A. y Guevara-Peñaranda, N. 2025. The lack of a National English curriculum for preschoolers: Impact on language teaching. CIENCIAMATRIA. 11, 1 (feb. 2025), 30-45. DOI:https://doi.org/10.35381/cm.v11i1.1524.