Anggono, Bambang, Istiatin Istiatin, and Sudarwati Sudarwati. “Performance Competencies of the Giri Tirta Sari Drinking Water Perumda Wonogiri District”. Jurnal Mantik 7, no. 4 (February 28, 2024): 3326-3333. Accessed August 23, 2026. https://iocscience.org/ejournal/index.php/mantik/article/view/4696.