Hunaifi, Hunaifi, and Darhim Darhim. “Students Error Analysis in Solving Mathematical Communication Problems of Square and Triangle Material For 7th Grade Based On Watson Criteria”. International Conference on Elementary Education 2, no. 1 (March 4, 2020): 914-924. Accessed May 9, 2024. http://proceedings.upi.edu/index.php/icee/article/view/703.