SANOVA, Yanna; ZULKARDI, Zulkardi; HARTONO, Yusuf. Pengembangan Soal Pengayaan Matematika Online untuk Siswa Kelas X. Jurnal Elemen, [S. l.], v. 3, n. 1, p. 58–67, 2017. DOI: 10.29408/jel.v3i1.331. Disponível em: https://e-journal.hamzanwadi.ac.id/index.php/jel/article/view/331. Acesso em: 22 nov. 2024.