Sihombing, M. and Damanik, B. 2025. The Impact of TikTok Usage on English Language Acquisition Among Adolescent Students in HKBP Siantar Timur. TRANSFORM : Journal of English Language Teaching and Learning. 14, 1 (Mar. 2025), 29–46. DOI:https://doi.org/10.24114/tj.v14i1.67334.