Marthin, Emmilya Febri, Hardeli, Budhi Oktavia, and Desy Kurniawati. “Development of Problem-Based Learning Student Worksheet Integrated With Ethnoscience on Acid-Base Material”. Jurnal Penelitian Pendidikan IPA 10, no. 7 (July 25, 2024): 3886–3893. Accessed August 4, 2024. https://jppipa.unram.ac.id/index.php/jppipa/article/view/7930.