Raden Ridwan Hasan Saputra, and Hania Rahmah. “Performa Siswa Sekolah Islam Dalam International Kangaroo Mathematics Contest”. JPG: Jurnal Pendidikan Guru, vol. 6, no. 4, Nov. 2025, pp. 770-8, http://150.107.142.43/index.php/jpg/article/view/22107.