Zainuri, Muhammad, and Topo Yono. “MODIFICATION OF THE DIFFICULTY OF FACILITIES AND INFRASTRUCTURE IN SALAF SCHOOLS WITH THE BELIEF, TRULY WITH DIFFICULTY THERE IS EASE”. Gladi : Jurnal Ilmu Keolahragaan, vol. 16, no. 02, May 2025, pp. 243-8, doi:10.21009/GJIK.162.09.