Siswanto, Siswanto, and Yulaikah Yulaikah. “Implementation of Cognitive Learning Theory in Polya Learning to Improve Mathematical Problem Solving Ability”. Jurnal Analisa 9, no. 1 (June 30, 2023): 48–58. Accessed June 3, 2026. http://journal.uinsgd.ac.id/index.php/analisa/article/view/25026.