G. S. Sidik and F. Nugraha, “Proses Berpikir pada Pemahaman Matematik Siswa Sekolah Dasar Terkait Materi Operasi Hitung Perkalian dan Pembagian Pecahan: The Process of Thinking in Mathematical Understanding of Primary School Students Regarding Counting Operation Materials Multiplicat”, pedagogia, vol. 8, no. 1, pp. 45–52, Feb. 2019.