Marini, A., Z. MS, A. Maksum, O. Satibi, G. Yarmi, and A. Wahyudi. “Model of Character Building for Elementary School Students”. International Journal of Control and Automation, Vol. 12, no. 4, Sept. 2019, pp. 01 -0, https://sersc.org/journals/index.php/IJCA/article/view/230.