Vidanisa Nurkhotimah, Turmudi, dan Italyani Nurhaifa. “Efectivity of the Open Ended Approach to Increasing Students’ Mathematical Creative Thinking Ability in Elementary Schools”. International Conference on Elementary Education, Vol. 5, no. 1, Juni 2023, hlm. 683-92, http://proceedings.upi.edu/index.php/icee/article/view/3153.