Sagala, P. N. (2018) “APPLICATION OF PROBLEM-BASED LEARNING MODELS TO IMPROVE STUDENTS’ MATHEMATICAL CREATIVE THINKING ABILITIES”, REKOGNISI : Jurnal Pendidikan dan Kependidikan (E-ISSN 2599-2260), 3(1), pp. 61–80. Available at: https://jurnal.unusu.ac.id/index.php/rekognisi/article/view/79 (Accessed: 6 April 2025).