REYNOLD PANTAS SINAGA; ROSBEN SIHOMBING; OSCO PARMONANGAN SIJABAT. SOSIALISASI PENINGKATAN PROFESSIONAL PENDIDIK MELALUI PENELITIAN TINDAKAN KELAS BAGI GURU GURU SMA/SMK SWASTA HKBP PEMATANGSIANTAR. Pengembangan Penelitian Pengabdian Jurnal Indonesia (P3JI), [S. l.], v. 1, n. 3, p. 109–113, 2023. Disponível em: https://jurnal.migascentral.com/index.php/p3ji/article/view/60. Acesso em: 20 apr. 2026.