Setyawan, Fariz, Yosep Dwi Kristanto, and Naufal Ishartono. “Preparing In-Service Teacher Using Dynamic Geometry Software”. International Journal of Engineering & Technology 7, no. 4.30 (November 30, 2018): 367–370. Accessed April 29, 2024. https://www.sciencepubco.com/index.php/ijet/article/view/22317.