Samosir, Angeline Elisabeth, Viator Lumban Raja, and Fiber Yun A Ginting. “GRAMMATICAL ERRORS MADE BY THE TENTH GRADE STUDENTS OF SMK GRAFIKA BINA MEDIA MEDAN IN WRITING ADVERTISEMENT TEXT”. Kairos English Language Teaching Journal 4, no. 2 (March 16, 2021): 126–137. Accessed July 3, 2024. https://ejournal.ust.ac.id/index.php/KAIROS/article/view/1141.