Banjarnahor, Roslitha Uli, Lastri Wahyuni Manurung, and Usman Sidabutar. “The Implementation Of Visual-Picture Sequences On The Improve Students’ Writing Ability In Grade XI of SMA Negeri 1 Baktiraja, Humbang Hasundutan”. Innovative: Journal Of Social Science Research 3, no. 2 (May 8, 2023): 1215–1225. Accessed July 11, 2026. https://j-innovative.org/index.php/Innovative/article/view/420.