Ioril Diater Agra Hutabarat, Fahmil Haris, Ridho Bahtra, and Anggun Permatasari, “A PENGARUH LATIHAN LADDER DRILL TERHADAP KEMAMPUAN FOOTWORK PB ILVERD: Pengaruh Latihan Ladder Drill Terhadap Kemampuan Footwork Pb Ilverd”, Jurnal IKEOR, vol. 4, no. No.1, Feb. 2026.