“Investasi Infrastruktur Air Bersih Pipa Di Indonesia, Renungan 79 Tahun Indonesia Merdeka”. Jurnal Persatuan Nasional 1, no. 1 (August 13, 2024): 31–33. Accessed July 25, 2026. https://jurnalpersatuannasional.id/index.php/jpnasional/article/view/1.