Lasumbu, Indrawati, et al. “Efforts to Increase Students’ Problem-Solving Abilities Through the Application of PBL Assisted by Virtual Laboratory on the Hydrostatic Pressure Concept”. Jurnal Penelitian Pendidikan IPA, vol. 10, no. 8, Aug. 2024, pp. 6245-51, doi:10.29303/jppipa.v10i8.8058.