Alexsandro, Kris, and Alexander Hamonangan Simamora. “Character Education Based E-Book in Civics Subject for Grade IV Elementary School”. Indonesian Values and Character Education Journal 6, no. 2 (January 1, 2024): 143–153. Accessed December 2, 2024. https://ejournal.undiksha.ac.id/index.php/IVCEJ/article/view/62007.