GYMNASTIAR, Iman Ahmad; HUFAD, Achmad; WAHYUNI, Sri. The role of the boarding school system on leadership character building and 21st century skills in high school students at Global Islamic Boarding School South Kalimantan. Jurnal Penelitian Pendidikan, [S. l.], v. 23, n. 1, p. 56–72, 2023. DOI: 10.17509/jpp.v23i1.56538. Disponível em: https://ejournal-dppm.upi.edu/jpp/article/view/645. Acesso em: 1 aug. 2026.