Dahliawaty, D., Z. Zulmiyetri, I. Irdamurni, and I. S. Utami. “Improving Learning of Addition Count Operation through Realistic Mathematics Education Approach for Mildly Retarded Children: Classroom Action Research VII SLB Autisma Mutiara Bangsa Pratama Padang”. Edumaspul: Jurnal Pendidikan, Vol. 7, no. 1, Mar. 2023, https://jurnal.unimen.cloud/index.php/maspuljr/article/view/5624.