ARIFIN, Zaenal; RETNAWATI, Heri. Pengembangan instrumen pengukur higher order thinking skills matematika siswa SMA kelas X. PYTHAGORAS Jurnal Matematika dan Pendidikan Matematika, [S. l.], v. 12, n. 1, p. 98–108, 2017. DOI: 10.21831/pg.v12i1.14058. Disponível em: https://journal.uny.ac.id/index.php/pythagoras/article/view/14058. Acesso em: 19 jul. 2025.