Dwiana Novianti Tufail, and Rahmayani. “The Strategy for Optimizing Land Capacity in Groundwater Supply in Balikpapan City”. SPECTA Journal of Technology 6, no. 3 (January 27, 2023): 342–354. Accessed July 8, 2025. https://journal.itk.ac.id/index.php/sjt/article/view/728.