Udi Priyono, Isjoni, & Bunari. (2024). 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, 13(4), 153-158. https://doi.org/10.33578/jpfkip-v13i4.p153-158