Siregar, Christina Anita Elizabeth, Sanggam Siahaan, and Herman Fukada. “The Effect Of Whatsapp Teaching Media To The Reading Comprehension On A Narrative Text At SMP Negeri 4 Pematangsiantar”. Innovative: Journal Of Social Science Research 4, no. 5 (September 12, 2024): 2086–2099. Accessed May 16, 2026. https://j-innovative.org/index.php/Innovative/article/view/15208.