Nanning, Nanning, Saepuddin, and Munawir. “An Analysis of Grammatical Error of English Students in Writing Skill”. Eduvelop: Journal of English Education and Development 3, no. 2 (March 21, 2020): 145-160. Accessed April 20, 2024. https://ojs.unsulbar.ac.id/index.php/eduvelop/article/view/636.