Tumanggor, Orli Binta, Aprilza Aswani, and Winda Syafitri. “Students’ Analyses Toward Grammatical Errors on Social Media’s Posts: Case Study in Politeknik Negeri Medan”. FOSTER: Journal of English Language Teaching 2, no. 2 (April 30, 2021): 320-330. Accessed September 7, 2024. https://foster.pbi-iainpalopo.ac.id/index.php/contents/article/view/44.