Wantono, W., Yuniati, N. and Suyanti, D. E. (2026) “Security Management at the Bromonilan Cup IV Volleyball Tournament in Sleman, Special Region of Yogyakarta”, Jurnal Indonesia Sosial Sains, 7(3), pp. 1090–1099. doi: 10.59141/jiss.v7i3.2241.