Sembiring, Piter, Marsel Ridky Maulana, Asep Rizwan Nurfalah, and Al Muqri. “Goal-Oriented Learning in Private Music Education: Case Study on Piano, Keyboard, and Drums”. Nusantara: Jurnal Pendidikan Indonesia 5, no. 2 (April 30, 2025): 281–294. Accessed April 24, 2026. https://journal.rumahindonesia.org/index.php/njpi/article/view/930.