Safrudin Fahmi, Melfa Br Nababan, & Orbit Irwansyah. (2025). ENHANCING THE MASTERY OF LONG SERVICE BADMINTON TECHNIQUES USING THE DRILL METHOD AMONG ELEVENTH- GRADE STUDENTS AT SMA NEGERI 1 BADAR. International Journal of Social Science, Educational, Economics, Agriculture Research and Technology (IJSET), 4(6), 4500–4506. https://doi.org/10.54443/ijset.v4i6.1334