Napitupulu, M. N., R. Huda, and H. S. Rezeky Purba. “Improving Students’ Vocabulary Mastery by Using English Song at Grade VII SMP Muhammadiyah Sibabangun”. PANTAK: Jurnal Penelitian Tindakan Kelas, vol. 2, no. 1, June 2025, pp. 39-46, doi:10.64733/journalpantak.v2i1.77.