SAFITRI, YUNI, et al. “ANALISIS KECEMASAN SISWA DALAM PROSES PEMBELAJARAN TERHADAP HASIL BELAJAR MATEMATIKA DI KELAS X MA MUHAMMADIYAH AIMAS”. THEOREMA: The Journal Education of Mathematics, vol. 2, no. 1, July 2021, https://e-journal.unimudasorong.ac.id/index.php/jurnaltheorema/article/view/1107.