Permata SAI, Sunarno W, Harlita H. The Effect of the Problem Based Learning and Double Loop Problem Solving Learning Models on Problem Solving Ability in Term of Creative Thinking on Environmental Pollution Material . jppipa, pendidikan ipa, fisika, biologi, kimia [Internet]. 2022 Dec. 28 [cited 2024 Apr. 24];8(6):2647-53. Available from: https://jppipa.unram.ac.id/index.php/jppipa/article/view/1996