Rukua, L. K., E. Siregar, and R. A. M. K. Wirasti. “Character Education Learning Using The Contextual Teaching Learning (CTL) Approach for Civics Learning”. Journal of Education Research and Evaluation, vol. 5, no. 2, Apr. 2021, pp. 324-31, doi:10.23887/jere.v5i2.31760.