ESPIRITU, C. “Alternative Strategies and Approaches in Integrating 21st-Century Skills into the Matatag Classrooms and Their Challenges”. Divine Word International Journal of Management and Humanities (DWIJMH) (ISSN: 2980-4817), vol. 4, no. 4, Dec. 2025, pp. 2338-53, doi:10.62025/dwijmh.v4i4.213.