“Pengembangan Soal Matematika HOTS (Higher Order Thinking Skills) Kelas X Berdasarkan Triple Theory”. Efektor 5, no. 2 (July 13, 2018): 117–125. Accessed April 5, 2025. https://ojs.unpkediri.ac.id/index.php/efektor-e/article/view/12234.