Andayani, Andayani, Makruf Akbar, and Situmorang Robinson. “Polite Speech Acts As a Behaviour of Value of Strengthening Character Education Program in Elementary Schools”. International Conference on Elementary Education 2, no. 1 (March 3, 2020): 611-617. Accessed November 1, 2024. http://proceedings2.upi.edu/index.php/icee/article/view/667.