Ratih, Putri Deti, and Eli Rohaeti. “Implementation of Electronic Worksheets Based on Problem-Based Learning on Acid-Base Materials to Develop Students’ Problem-Solving Ability ”. Jurnal Penelitian Pendidikan IPA 8, no. 4 (October 31, 2022): 1979–1984. Accessed November 22, 2024. https://jppipa.unram.ac.id/index.php/jppipa/article/view/1928.