SETIAWAN, Y. E. Analisis Kesalahan Mahasiswa Semester Pertama dalam Menentukan Nilai Fungsi Trigonometri Sudut Istimewa. SJME (Supremum Journal of Mathematics Education), [S. l.], v. 5, n. 1, 2021. DOI: 10.35706/sjme.v5i1.4531. Disponível em: https://journal.unsika.ac.id/index.php/supremum/article/view/4531. Acesso em: 29 mar. 2024.