Banjarnahor, Daulat Nathanael. “Pengaruh Model Pembelajaran Problem Based Learning Dalam Meningkatkan Sikap Demokratis Mahasiswa”. PENDIPA Journal of Science Education 5, no. 3 (March 22, 2021): 316–321. Accessed May 9, 2025. https://ejournal.unib.ac.id/pendipa/article/view/14422.