Amelia, Silvia, and Muhammad Arif As’adi. “Analisis Kandungan Nitrat, Fosfat, Dan Amonia Serta Pengaruhnya Terhadap Kelimpahan Fitoplankton Di Sungai Brantas”. Environmental Pollution Journal 4, no. 2 (July 24, 2024): 1075–1085. Accessed November 21, 2025. https://www.ecotonjournal.id/index.php/epj/article/view/197.