MASRIZAL; HARAHAP, S. Z.; MUNANDAR, M. H.; IRMAYANTI; HAYATI, A. Design and Development of Mathematics and Basic Indonesian Learning Tools for Early Children Based on Android. Jurnal Mantik, [S. l.], v. 4, n. 3, p. 2017-2022, 2020. DOI: 10.35335/mantik.Vol4.2020.1060.pp2017-2022. Disponível em: https://iocscience.org/ejournal/index.php/mantik/article/view/1060. Acesso em: 28 apr. 2026.