GULTOM, Tiamsa. Penilaian Kinerja Guru Mengenai Profesionalisme Guru Di Smp Negeri 2 Pangaribuan Kabupaten Tapanuli Utara Tahun 2020. Journal Of Education And Teaching Learning (JETL), [S. l.], v. 2, n. 3, p. 29–43, 2020. DOI: 10.51178/jetl.v2i3.66. Disponível em: https://pusdikra-publishing.com/index.php/jetl/article/view/66. Acesso em: 30 aug. 2025.