Suyitno, H., R. Rochmad, E. Sugiharti, A. Suyitno, and G. Yuanbing. “Mathematics Learning Which Include With Character Values (Based on Findings at Guangxi Normal University and UNNES) ”. KnE Social Sciences, Vol. 3, no. 18, July 2019, pp. 213–221, doi:10.18502/kss.v3i18.4715.