Syarifuddin, Edi Harapan, and Dessy Wardiah. “Implementation of Teacher Certification in Improving Teacher Performance in 1 Rambutan Junior High School”. Jurnal Pendidikan Tambusai 5, no. 3 (August 30, 2021): 5717–5722. Accessed February 5, 2025. http://jptam.org/index.php/jptam/article/view/1796.