Sembiring RA, Galingging K, Sihite J, Sitompul DS, Situmorang SF, Japardi YNY. MENINGKATKAN KEMAMPUAN BAHASA DAN KETERAMPILAN BERNYANYI BAHASA INGGRIS BAGI MUDA MUDI GEREJA HKBP MARTUBUNG: Improving Language Ability And English Singing Skills For Youth Of Hkbp Martubung Church. MJPKM [Internet]. 2023 Aug. 8 [cited 2026 Jul. 11];2(4):194-8. Available from: https://pakisjournal.com/index.php/mestaka/article/view/120