KUSUMA, P.; PRATAMA, R. S.; ULKARNAIN, A. I. Implementasi Problem Based-Learning dalam Pendidikan Kewarganegaraan Tentang Penguatan Nasionalisme Siswa . Journal of Innovative and Creativity, [S. l.], v. 5, n. 2, p. 289–296, 2025. DOI: 10.31004/joecy.v5i2.193. Disponível em: https://joecy.org/index.php/joecy/article/view/193. Acesso em: 16 oct. 2026.