E-Book Development on ’Bhinneka Tunggal Ika’ for Grade 5 at SDN 1 Sumberjo Kulon. Journal of Indonesian Elementary Education, [S. l.], v. 2, n. 2, p. 110–117, 2024. Disponível em: https://ejournal.intelektualedu.com/index.php/JIEE/article/view/13.. Acesso em: 4 jun. 2026.