Vilela-Malabanan, Cenie M., and Nancy Q. Echavez. “Constraints on the Use of a Learning Management System in a Blended Learning Environment”. International Journal on Open and Distance e-Learning 4, no. 2 (December 31, 2018). Accessed March 29, 2024. https://ijodel.upou.edu.ph/index.php/ijodel/article/view/74.