INVESTIGATING CAUSES OF GRAMMATICAL ERRORSIN WRITING NARRATIVE  TEXT AT ELEVENTH GRADE OF SMA NEGERI 1 SIANTAN. Journal of English Language Teaching and Education (JELTE), [S. l.], v. 5, n. 2, p. 78–88, 2024. DOI: 10.31571/wfgaep61. Disponível em: https://jurnal.fpbs.ikippgriptk.ac.id/index.php/jelte/article/view/1091. Acesso em: 9 mar. 2025.