Andrés C, Anchetta G, Barboza-Robles Y, Peraza-Delgado M. Pedagogical mediation strategies of educational materials in the Costa Rican Distance Education University. URJ [Internet]. 2020 May 27 [cited 2024 Nov. 21];12(1):e2940. Available from: https://revistas.uned.ac.cr/index.php/cuadernos/article/view/2940