NASUTION, Ahmad Taufik; ANSORI, M Afif; ANDARI, An An; PRIBADI, Joko; KHOLIL, Muhamad. GUPPI Educational Institutions (1968-1992). Yupa: Historical Studies Journal, [S. l.], v. 8, n. 1, p. 226–239, 2024. DOI: 10.30872/yupa.v8i1.3150. Disponível em: https://jurnal.fkip.unmul.ac.id/index.php/yupa/article/view/3150. Acesso em: 9 apr. 2026.