Nababan, B., & Siagian, S. (2025). Empowering Teachers’ Professional Competence through the PIKOLAK Training Model (Participatory, Integrative, and Collaborative) with a Blended Learning Approach in Humbang Hasundutan Regency. International Journal of Humanities and Education Development (IJHED), 7(6), 93-101. https://doi.org/10.22161/jhed.7.6.10