Istiningsih, Istiningsih. “The Performance of Indonesian Citizen Character and Its Contributors of Senior High School Students in Sleman Yogyakarta Indonesia”. International Journal of Engineering & Technology 7, no. 3.25 (August 14, 2018): 558–562. Accessed December 3, 2024. https://sciencepubco.com/index.php/ijet/article/view/17797.