Sukartono, Sukartono, Samsudi Samsudi, Tri Raharjo, and DYP. Sugiharto. “Training Effectiveness In Improving Teachers Professionalism Competence In School”. The Journal of Educational Development 4, no. 1 (1): 1-7. Accessed November 25, 2024. https://journal.unnes.ac.id/sju/jed/article/view/10962.