Foo, Chuan Hui, and Eric Ching Siang Ng. “Development of GeoGebra-Based Module to Enhance Students’ Understanding of Form Two Circles”. Journal of Science and Mathematics Letters 10, no. 2 (October 21, 2022): 67–73. Accessed April 11, 2025. https://ejournal.upsi.edu.my/index.php/JSML/article/view/7034.