Ningsih NR, Kamaludin A. Development of Higher Order Thinking Skills-Based Assessment Instrument on Acid-Base Materials in High School. jppipa, pendidikan ipa, fisika, biologi, kimia [Internet]. 2023 Jan. 31 [cited 2024 May 3];9(1):13-9. Available from: https://jppipa.unram.ac.id/index.php/jppipa/article/view/1457