Sarumaha, Yenny Anggreini, Dian Khairiani, Nur Dina Meylaila Khasanah, and Nurma Sari. “Jari Trigonometri: Alternatif Alat Peraga Pembelajaran Matematika”. Plusminus: Jurnal Pendidikan Matematika 4, no. 1 (March 30, 2024): 69–82. Accessed December 22, 2024. https://journal.institutpendidikan.ac.id/index.php/plusminus/article/view/1496.