Sari Adelina, Yunita, Neneng Sri Lestari, and Edi Suprayetno. “Analysis Students Addition Error in Writing Thesis Abstract Of English Education Department STKIP AL Maksum Langkat”. JURNAL MUTIARA PENDIDIKAN INDONESIA 7, no. 2 (December 10, 2022): 167–172. Accessed March 29, 2024. http://e-journal.sari-mutiara.ac.id/index.php/JMT/article/view/3476.