INVESTASI INFRASTRUKTUR AIR BERSIH PIPA DI INDONESIA, RENUNGAN 79 TAHUN INDONESIA MERDEKA. Jurnal Persatuan Nasional, [S. l.], v. 1, n. 1, p. 31–33, 2024. Disponível em: http://jurnalpersatuannasional.id/index.php/jpnasional/article/view/1. Acesso em: 6 jul. 2025.