Ruslan, R. et al. 2020. The Development of Reasonable Mathematical Problems Based on Content Validity in Mathematics Teachers Conference (MGMP) of Bone Regency, Indonesia: Pengembangan Soal Matematika Berdaya Nalar Tinggi Berdasarkan Validitas Isi di MGMP Matematika Kabupaten Bone, Indonesia. Mattawang: Jurnal Pengabdian Masyarakat. 1, 1 (Dec. 2020), 15–19. DOI:https://doi.org/10.35877/454RI.mattawang169.