Sutiarso, Sugeng. “STUDENTS’ ABILITY TO READ STATISTICAL DIAGRAM”. Kalamatika: Jurnal Pendidikan Matematika 5, no. 1 (April 30, 2020): 69-82. Accessed March 4, 2026. https://www.matematika-uhamka.com/kalamatika_old/index.php/kmk/article/view/398.