Setiawan, Wahyu, and Veny Triyana Andika Sari. “Pengembangan Bahan Ajar Konsep Diferensial Berbasis Konflik Kognitif”. Jurnal Elemen 4, no. 2 (July 30, 2018): 204–215. Accessed May 6, 2024. https://e-journal.hamzanwadi.ac.id/index.php/jel/article/view/511.