Villanueva, Juliet Aleta Rivera, Petrea Redmond, and Linda Galligan. “Manifestations of Cognitive Presence in Blended Learning Classes of the Philippine K-12 System”. Online Learning 26, no. 1 (March 1, 2022). Accessed March 25, 2026. https://olj.onlinelearningconsortium.org/index.php/olj/article/view/3021.