Juan Fidel Siahaan, M.Mutawalli Shodiq, Jahroniansyah, Haikal, Rifki Gamal Hasan, Randi Kurniawan and Deni Rahman Marpaung 2025. A Comprehensive and Extended Review of Volleyball Instructional Innovation and Extracurricular Development Across Indonesian Schools: A Synthesis of Soft-Ball Media Research and High-School Extracurricular Implementation. IKRA-ITH HUMANIORA : Jurnal Sosial dan Humaniora. 9, 3 (Dec. 2025), 902-914.