Muhammad Haris Adianto (2023) “Peningkatan Hasil Belajar Matematika Materi Bilangan Bulat Berbantuan Alat Peraga OBIBUL Siswa Kelas VI”, Prosiding Seminar Nasional Pendidikan Profesi Guru, 1(2), pp. 2314–2320. Available at: https://conference.upgris.ac.id/index.php/psnppg/article/view/5384 (Accessed: 15 April 2025).