Siregar, Muhammad Sapril, Nasir Usman, dan Niswanto Niswanto. “Implementasi Pendidikan Karakter Melalui Model Pembelajaran Berbasis Masalah (Literature Review Manajemen Pendidikan)”. Jurnal Pendidikan West Science 1, no. 11 (November 30, 2023): 701–712. Diakses Desember 4, 2024. https://wnj.westscience-press.com/index.php/jpdws/article/view/762.