“The Effect Of Ladder Drill Training On The Speed Of Pulse Matra Futsal Club Players, Pasangkayu District”. COMPETITOR: Jurnal Pendidikan Kepelatihan Olahraga 17, no. 2 (August 6, 2025): 1704–1712. Accessed December 7, 2025. http://competitor.ojsunm.ac.id/index.php/competitor/article/view/249.