Hendra H, Sari RM, Sari SR. Internalization of Muhammad Yamin’s character values as a source of character values in civics learning. jppfa [Internet]. 2023 Dec. 15 [cited 2025 May 15];11(1):69-78. Available from: https://jurnal.uny.ac.id/index.php/jppfa/article/view/60597