METODE SUTRISNO (MasTris) SUATU INOVASI DALAM PENJUMLAHAN ANGKA BANYAK. EduMa: Mathematics education learning and teaching, [S. l.], v. 5, n. 2, p. 52–59, 2016. DOI: 10.24235/eduma.v5i2.1116. Disponível em: https://journal1.uinssc.ac.id/index.php/eduma/article/view/1116. Acesso em: 28 may. 2026.