Miyarti, M., Inawati, I., Khafifah, M.N., Henu, N., Damayanti, R.V. and Aisyah, S. 2024. AN INVESTIGATION OF PROFESSIONAL DEVELOPMENT OF ENGLISH TEACHER IN PRIMARY SCHOOL SETTING: A CASE STUDY. Celtic : A Journal of Culture, English Language Teaching, Literature and Linguistics. 11, 1 (Jun. 2024), 73–88. DOI:https://doi.org/10.22219/celtic.v11i1.29231.