Sembiring JAB, Simamora I, Verbina S, Sitepu SA, Sembiring M. Sosialisasi Membangun Keterampilan Public Speaking di SMA Katolik 2 Kabanjahe. INCOME [Internet]. 7 September 2024 [dikutip 26 Juni 2025];3(3):152-9. Tersedia pada: https://journals.eduped.org/index.php/income/article/view/1107