HAMKA, Nurhadi. Language Policy and Planning: Diglossia in Indonesia. Sang Pencerah: Jurnal Ilmiah Universitas Muhammadiyah Buton, [S. l.], v. 8, n. 2, p. 295–301, 2022. DOI: 10.35326/pencerah.v8i2.1948. Disponível em: https://jurnal-umbuton.ac.id/index.php/Pencerah/article/view/1948. Acesso em: 1 jul. 2025.