Hariyanto, H. dan Ramadhan , G. 2025. Comparative Analysis of Salinity Readings for Water Quality Monitoring between IoT-Based Sensor Systems and Refractometer . Jurnal Nasional Teknologi dan Sistem Informasi. 11, 3 (Des 2025), 273–281. DOI:https://doi.org/10.25077/TEKNOSI.v11i3.2025.273-281.