The effect of teacher professional certification and work motivation on the performance of elementary school teachers in the Kempas district, Indragiri Hilir regency. Primary: Jurnal Pendidikan Guru Sekolah Dasar, [S. l.], v. 13, n. 4, p. 153–158, 2024. DOI: 10.33578/jpfkip-v13i4.p153-158. Disponível em: https://primary.ejournal.unri.ac.id/index.php/JPFKIP/article/view/31. Acesso em: 12 may. 2025.