Arisa, Siti Nur, et al. “The Effect of Search, Solve, Create and Share Learning Models to Improve Students ’Critical Thinking Skills on Acid and Basic Titration Materials”. Jurnal Penelitian Pendidikan IPA, vol. 7, no. 2, Apr. 2021, pp. 191-5, doi:10.29303/jppipa.v7i2.625.