Dalle, Ambo, and Darmawati Darmawati. 2022. “The Musyawarah Guru Mata Pelajaran Forum and Its Roles in Improving the Professionalism of High School English Teachers”. Indonesian Research Journal in Education |IRJE| 6 (2):341-51. https://mail.online-journal.unja.ac.id/irje/article/view/20636.