Fathiah Umriani, Suparman, Yahya Hairun , Diah Prawitha Sari. “Analysis and Design of Mathematics Student Worksheets Based on PBL Learning Models to Improve Creative Thinking”. International Journal of Advanced Science and Technology 29, no. 7s (April 14, 2020): 226 - 237. Accessed May 4, 2024. http://sersc.org/journals/index.php/IJAST/article/view/9431.