MURWANINGSIH, Tri. PERANAN PERSATUAN GURU REPUBLIK INDONESIA (PGRI) DALAM UPAYA PENINGKATAN PROFESIONALISME GURU. Jurnal Ilmiah Guru Caraka Olah Pikir Edukatif, [S. l.], v. 8, n. 01, 2015. DOI: 10.21831/jig cope.v8i01.5435. Disponível em: https://journal.uny.ac.id/index.php/cope/article/view/5435. Acesso em: 10 may. 2025.