SETIAWAN, A.; SARIYATUN, S.; ARDIANTO, D. T. The Innovation of Democratic Education: The Development of Learning Approach Based on the Sutan Syahrir’ Thought to Strengthen Students’ Democratic Attitude. Yupa: Historical Studies Journal, [S. l.], v. 2, n. 2, p. 105–114, 2018. DOI: 10.30872/yupa.v2i2.121. Disponível em: https://jurnal.fkip.unmul.ac.id/index.php/yupa/article/view/121. Acesso em: 4 apr. 2025.