Baharuddin, Baharuddin. “Peningkatan Pemahaman Konsep Operasi Hitung Perkalian Bilangan Cacah Melalui Pendekatan Konstruktivisme”. 2024. Venn: Journal of Sustainable Innovation on Education, Mathematics and Natural Sciences, vol. 3, no. 3, Aug. 2024, pp. 89-97, doi:10.53696/venn.v3i3.169.