Agusfianuddin, Tatang Herman ,Turmudi. “Identifying Students’ Difficulties in Mathematics Word Problem Solving in Elementary School”. International Journal of Advanced Science and Technology 29, no. 7s (April 14, 2020): 238 - 250. Accessed September 23, 2021. https://sersc.org/journals/index.php/IJAST/article/view/9432.