Villa, Katherine. “Managing the Invisible Learner: Causes and Strategies”. Divine Word International Journal of Management and Humanities (DWIJMH) (ISSN: 2980-4817) 4, no. 3 (September 29, 2025): 1972–1989. Accessed January 20, 2026. https://www.dwijmh.org/index.php/dwijmh/article/view/177.