Hutasoit, A., Laksmiati, D. and Mufid, Z. 2025. Design and Development of an IoT-Based Monitoring System for Ammonia Gas, Temperature, and Humidity in Poultry Houses with Automatic Control via Blynk. Jurnal Multidisiplin Sahombu. 5, 08 (Dec. 2025), 2867–2874.