Hernández Tamacas, Maricela Astrid, and Johana Iveth Delgado de Hernández. 2023. “Material in Virtual Platforms and Its Impact on Learning and Course Perception”. Anuario De Investigación: Universidad Católica De El Salvador 12 (1):55-61. https://doi.org/10.5377/aiunicaes.v12i1.16625.