SUMARNO HM, Bambang. SEMPOA DALAM PERSPEKTIF MEDIA PEMBELAJARAN HITUNG ARITMATIKA. COPE: Caraka Olah Pikir Edukatif, [S. l.], v. 5, n. 02, 2015. DOI: 10.21831/jig cope.v5i02.5359. Disponível em: https://journal.uny.ac.id/index.php/cope/article/view/5359. Acesso em: 14 oct. 2025.