Kamaludin, Agus, and Ismiatun. “Pengembangan Buku Teks Bermuatan Higher Order Thinking Skills (HOTS) Pada Materi Gugus Fungsi”. Journal of Tropical Chemistry Research and Education 5, no. 2 (October 29, 2023): 34–42. Accessed July 14, 2025. https://journal.uin-suka.ac.id/tarbiyah/jtcre/article/view/52-04.