Napitupulu, Y. E. (2026) “TOEFL Socialization as A Media to Improve Listening Skills Competence of Students at SMA Mars Pematangsiantar”, Pengabdian Masyarakat Sumber Daya Unggul, 4(1), pp. 10–18. doi: 10.37985/pmsdu.v4i1.1788.