Vitriani, Okta, and Sukiman. “The Invisible Curriculum That Shapes Character: A PRISMA-Based Systematic Review of Hidden Curriculum in Elementary Schools”. DIDAKTIKA: Jurnal Pendidikan Sekolah Dasar, vol. 9, no. 1, July 2026, pp. 92-100, https://journal.uny.ac.id/index.php/didaktika/article/view/99520.