Nugroho, Ferid. “Implementation of Bela Beli Kulonprogo in Producing Drinking Water in Packaging Kulonprogo District”. Jurnal Ilmiah Administrasi Pemerintahan Daerah 11, no. 2 (November 12, 2019): 1–8. Accessed May 2, 2026. https://ejournal.ipdn.ac.id/JAPD/article/view/735.