DAMAYANTI, Rika; MAWARDI, Mawardi. Developing of MITRA learning model of problem solving-based to solve mathematical problems in elementary school. Jurnal Prima Edukasia, [S. l.], v. 6, n. 1, p. 1–10, 2018. DOI: 10.21831/jpe.v6i1.17238. Disponível em: https://jurnal.uny.ac.id/index.php/jpe/article/view/17238. Acesso em: 7 jun. 2025.