Lubis AR, Sudrajat A, Nugraha AW. Development of higher order thinking skill (HOTS) assessment instrument for salt hydrolysis. J.Pendidik.Kim [Internet]. 2022 Apr. 18 [cited 2025 Jul. 4];14(1):63-9. Available from: https://jurnal.unimed.ac.id/2012/index.php/jpk/article/view/31382