KAMAL, Amir. PEMBENTUKAN SIGMA DELTA DAN IDEAL PRIMDARI GELANGGANG POLINOM MIRING. PYTHAGORAS Jurnal Matematika dan Pendidikan Matematika, [S. l.], v. 7, n. 1, 2015. DOI: 10.21831/pg.v7i1.2832. Disponível em: https://journal.uny.ac.id/index.php/pythagoras/article/view/2832. Acesso em: 10 jul. 2025.