Fitria W, Susilana R, Priatna N. Analysis of problem-solving ability: Pólya’s strategy and positive attitude. Inov. Curr [Internet]. 2024 Nov. 29 [cited 2026 Aug. 16];21(4):2009-20. Available from: https://ejournal-hipkin.or.id/index.php/jik/article/view/613