Pangestika, Ratna Rosita, and Risky Setiawan. “The Effect of Intensity of MGMP Activities, School Climate, and Work Commitments on the Professionalism of Economics High School Teachers”. Harmoni Sosial: Jurnal Pendidikan IPS 9, no. 1 (March 1, 2023). Accessed July 4, 2025. https://jurnal.uny.ac.id/index.php/hsjpi/article/view/8548.