Syamsuddin, Agustan, Armanda Bahtiar, and Irwan Akib. 2020. “Describing Mathematical Communication Ability, Logical Thinking and Student Learning Outcome of Class V Elementary School in Sombaopu Makassar”. International Conference on Elementary Education 2 (1). Bandung, Indonesia, 1435-45. http://proceedings.upi.edu/index.php/icee/article/view/771.