Calderón Badilla, Yency, and Rosita Ulate Sánchez. “Characterization of Learning Assessment in a University With a Distance Modality: The Case of Universidad Estatal a Distancia (UNED), 2017”. Ensayos Pedagógicos Journal, vol. 15, no. 2, Nov. 2020, pp. 173-92, https://doi.org/10.15359/rep.15-2.8.