Maysaroh E, Sutarni S. Improving Students’ Ability to Solve HOTS-Based Mathematics Problems with Problem-Solving Theory from Polya. VoJ [Internet]. 2023 Aug. 30 [cited 2024 Jul. 22];5(2):91-100. Available from: https://jurnalpendidikan.unisla.ac.id/index.php/VoJ/article/view/738