KHAIDIR, Christina. EFEKTIVITAS BUKU AJAR METODE NUMERIK BERBASIS KONSTRUKTIVISME DI IAIN BATUSANGKAR. Jurnal Saintika Unpam : Jurnal Sains dan Matematika Unpam, [S. l.], v. 2, n. 2, p. 109–114, 2019. DOI: 10.32493/jsmu.v2i2.3321. Disponível em: https://openjournal.unpam.ac.id/index.php/jsmu/article/view/3321. Acesso em: 3 feb. 2026.