SUSANTO, Sdyoko; MAHMUDI, Ali. Tahap berpikir geometri siswa SMP berdasarkan teori Van Hiele ditinjau dari keterampilan geometri. Jurnal Riset Pendidikan Matematika, [S. l.], v. 8, n. 1, p. 106–116, 2021. DOI: 10.21831/jrpm.v8i1.17044. Disponível em: https://journal.uny.ac.id/index.php/jrpm/article/view/17044. Acesso em: 10 may. 2025.