PENERAPAN ALGORITMA RAY CASTING  PADA APLIKASI PRESENSI ONLINE SISWA SMP NEGERI 6 MEDAN. AT-TAKLIM: Jurnal Pendidikan Multidisiplin, [S. l.], v. 2, n. 9, p. 187–198, 2025. DOI: 10.71282/at-taklim.v2i9.923. Disponível em: https://journal.hasbaedukasi.co.id/index.php/at-taklim/article/view/923.. Acesso em: 2 apr. 2026.