Dwiningsih, Kusumawati, et al. “Development of E-Learning Based PBL-STEM Learning Tools on Students’ Science Process Skills and Critical Thinking Ability”. Jurnal Penelitian Pendidikan IPA, vol. 10, no. 9, Sept. 2024, pp. 7171-8, doi:10.29303/jppipa.v10i9.7106.