Primahesa, Alfian, Sajidan Sajidan, and Murni Ramli. “Improving Higher Order Thinking Skills in High School Biology: A Systematic Review”. Biosfer: Jurnal Pendidikan Biologi 16, no. 1 (April 21, 2023): 206-219. Accessed May 5, 2025. http://103.8.12.212:33180/unj/index.php/biosfer/article/view/26724.