YUSLIRIADI, Yusliriadi; DARMAWIJOYO, Darmawijoyo; SOMAKIM, Somakim. Pengembangan Soal Open-Ended Pokok Bahasan Barisan dan Deret Bilangan untuk Siswa SMP. Jurnal Elemen, [S. l.], v. 1, n. 2, p. 106–118, 2015. DOI: 10.29408/jel.v1i2.85. Disponível em: https://e-journal.hamzanwadi.ac.id/index.php/jel/article/view/85. Acesso em: 7 may. 2024.