Lilis, and Mardiati. “MODEL PEMBELAJARAN PROBLEM SOLVING TERHADAP KEMANDIRIAN BELAJAR SISWA DI MASA PANDEMI”. Jurnal Serunai Matematika, vol. 14, no. 1, May 2022, pp. 26-33, https://www.ejournal.stkipbudidaya.ac.id/index.php/matematika/article/view/558.