GRACE, Ernest; INDAJANG, Kevin; EFENDI, Efendi; SIMATUPANG, Sudung. DAMPAK DARI PROFESIONALISME GURU TERHADAP KINERJA GURU SMA SWASTA SULTAN AGUNG PEMATANG SIANTAR. Jurnal Ilmiah Global Education, [S. l.], v. 4, n. 2, p. 579–586, 2023. DOI: 10.55681/jige.v4i2.738. Disponível em: https://ejournal.nusantaraglobal.or.id/index.php/jige/article/view/738. Acesso em: 28 jan. 2026.