Halil Nustadia, Edwar Rosman, Fitri Nova, and Hidra Amnur. “IoT-Based Prepaid Water Meter System With Digital Token for PDAM Customers”. JITSI : Jurnal Ilmiah Teknologi Sistem Informasi 6, no. 4 (December 31, 2025): 383 -388. Accessed March 5, 2026. https://jurnal-itsi.org/index.php/jitsi/article/view/513.