AZIZAH, U.; DJONO, D.; MUSADAD, A. A. Developing Digital Book Based on Lafran Pane’ Thought for Increasing State Defend Attitude of Students. Yupa: Historical Studies Journal, [S. l.], v. 4, n. 1, p. 29–39, 2020. DOI: 10.30872/yupa.v4i1.235. Disponível em: https://jurnal.fkip.unmul.ac.id/index.php/yupa/article/view/235. Acesso em: 3 mar. 2025.