Situmeang, N. A., J. Batubara, and V. A. Sebayang. “Investigating Vocal Technique and Musical Expression in the Song ‘Kasih Tak Sampai’: A Comparative Analysis of the Original and Cover Versions”. African Journal of Advanced Arts and Humanities, vol. 4, no. 3, July 2026, https://journals.evonexpublishers.com/index.php/AJAAH/article/view/90.