PURWANTO, Nurtanio Agus. Kapan Guru Profesional. Jurnal Ilmiah Guru Caraka Olah Pikir Edukatif, [S. l.], v. 11, n. 01, 2007. DOI: 10.21831/jig cope.v11i01.5478. Disponível em: https://journal.uny.ac.id/index.php/cope/article/view/5478. Acesso em: 10 may. 2025.