M. T. Maulani, N. Febrianti, R. Noor Hayati, L. Awaliyah, and M. K. Arrohman, “Local Water Resource Management: Utilization of a Spring in RT 7, Sumber Rejo Subdistrict, Balikpapan City as an Alternative Sustainable Clean Water Source”, sjt, vol. 10, no. 1, pp. 86–103, Apr. 2026.