Safrudin Fahmi, et al. “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), vol. 4, no. 6, May 2025, pp. 4500-6, doi:10.54443/ijset.v4i6.1334.