Andri, Andri, and Nasria Nacong. “KONDISI MINIMAL IDEAL KIRI TERURUT PADA SEMIGRUP TERNER TERURUT PARSIAL”. JURNAL ILMIAH MATEMATIKA DAN TERAPAN 15, no. 2 (July 19, 2019): 280-287. Accessed December 22, 2024. https://bestjournal.untad.ac.id/index.php/JIMT/article/view/13225.